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Ford 9 Inches We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP! We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Ford 9 Inches We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP! On Sale
28 Product Groups
Switch to View Products
From $1,091.00
4.5
4.5
(192)
Power Trax Lock-Right Lockers
Power Trax Lock Right LockerFrom $386.16
- The original locking differential
- Outstanding value
- Completely replaces stock differential
- Reuses your vehicle's existing carrier
- Includes Zytanium cross shaft
- Fully automatic operation for ease-of-use
- Case not required
- Does not alter ring and pinion
- Works for both front or rear or in tandem
- Thorougly tested to provide solid, reliable performance
- Bolt-in installation
- No gear resetting or shimming required
- Available in 22, 26, 30 and 31 spline configurations
- California Residents: WARNING
From $386.16
4.4
4.4
(185)
Lube Locker Differential Gaskets
Lube Locker Differential GasketFrom $29.99
- Throw your RTV away! Tired of the mess that silicone sealant leaves behind? Ever had to wail on the diff cover with a hammer to break it free? Lube Locker, gets the job done quicker with less hassle and mess. These gaskets are designed with a steel core that is rubber coat and have Lube Locker's signature full perimeter elastomer beading on BOTH sides. The result is a gasket that will not split or extrude during installation and has superior torque retention. There is no set up time because installation is dry with no sealant needed
- California Residents: WARNING
From $29.99
4.8
4.8
(68)
Dana Spicer Differential Carriers
Dana Spicer Differential CarriersFrom $378.99
- Cast from aircraft grade aluminum
- Fits Standard pinion support
- Billet Spanner nuts for strength
- Double rib design for strength
- California Residents: WARNING
From $378.99
Power Trax No-Slip Traction Systems
Power Trax No-Slip Traction SystemsFrom $519.95
- The Powertrax No-Slip Traction Systems are the latest design in traction-adding differential technology. They combine the smooth operation of a limited-slip differential with the traction performance of a locking differential. A precise synchronization mechanism eliminates the ratcheting sounds typical of other locking differentials. Installation is simple because no ring and pinion setup is required. In addition, no special tools or oils are needed.
- California Residents: WARNING
From $519.95
4.2
4.2
(66)
Alloy USA Rear Axle Shafts
Alloy USA Rear Axle ShaftsFrom $129.99
- Replacement Axle Shaft
- Stronger Than Factory
- Precision Heat Treated
- Rolled Splines
- California Residents: WARNING
From $129.99
3.8
3.8
(88)
Motive Gear Ring and Pinion Sets
Motive Gear AMC Model 20 3.31 RatioFrom $307.99
- Ring and Pinion Sets
- Stock performance ring and pinions
- Easy setup, superior strength, quality, and a vast ratio selection
- Backed by rigid quality control processes
- 2 year / 100,000 mile no-nonsense warranty
- California Residents: WARNING
From $307.99
3.8
3.8
(140)
Motive Gear Axle Shafts
Motive Gear Chrysler 8.25in.Replacement Rear AxleFrom $247.99
- Axle Shafts
- Rear
- Direct replacements for original equipment Jeep axle shafts without modifications
- Made from quality materials and heat treated for strength and durability
- Fits multiple Jeep models
- California Residents: WARNING
From $247.99
4.6
4.6
(84)
Dana Spicer Differential Cover Gaskets
Dana Spicer High Performance Dana 30 Differential Cover GasketFrom $32.99
- Differential Cover Gaskets
- High performance gasket for maximum durability
- Anti-stick coating on the outside
- Woven steel core at the center
- Easy repair on the trail
- Made in the USA
- California Residents: WARNING
From $32.99
4.5
4.5
(2)
ARB Competition Air Lockers
ARB 4x4 Accessories Competition Edition Air LockerFrom $2,465.00
- Stronger Case
- Fast Engagement
- California Residents: WARNING
From $2,465.00
Motive Gear Full Spools
Motive Gear Chrysler 8.750in. 30 Spline Full SpoolFrom $166.99
- If you are looking for maximum traction and strength nothing beets a full spool.
- Not Recommended For Street Use
- California Residents: WARNING
From $166.99
Motive Gear Mini Spools
Motive Gear Chrysler 8.750in. Mini SpoolFrom $33.99
- If you are looking for maximum traction and strength nothing beets a full spool.
- Not Recommended For Street Use
- California Residents: WARNING
From $33.99
3.8
3.8
(5)
From $639.99
4.7
4.7
(1131)
From $1,251.89
5.0
5.0
(2)
Yukon Gear & Axle Trac Loc Positraction Differentials
Yukon Gear & Axle Trac Loc Positraction DifferentialsFrom $799.89
- Available for different makes and models
- Available in different gear ratios
- Built with high strength and with tight tolerances
- Gears are cut to provide the strongest teeth possible in any terrain
From $799.89
Yukon Gear & Axle Dura Grip Positraction Differentials
Yukon Gear & Axle Dura Grip Positraction DifferentialsFrom $795.89
From $795.89
From $344.51
4.5
4.5
(28)
Yukon Gear & Axle Differential Master Overhaul Kits
Yukon Gear & Axle Differential Master Overhaul KitsFrom $281.89
From $281.89
Yukon Gear & Axle Grizzly Locker Differentials
Yukon Gear & Axle Grizzly Locker DifferentialsFrom $899.89
From $899.89
5.0
5.0
(2)
Auburn Gear Grip-N-Loc Series Limited Slip Differentials
Auburn Gear Grip-N-Loc Series Limited Slip DifferentialsFrom $749.99
- Upgrades vehicles for safe transfer of increased power/torque across the axle
- Case material is up to 50% stronger than OE cases
- Advanced cone clutch technology provides 25% increase in bias ratio/increased traction
- Exclusive 2-year warranty
From $749.99
5.0
5.0
(1)
USA Standard Gear Differential Master Overhaul Kits
USA Standard Gear Differential Master Overhaul KitsFrom $214.89
From $214.89
USA Standard Gear Spools
USA Standard Gear SpoolsFrom $128.02
- Available for different makes and models
- Available different spline count
- 5 year manufacturer warranty
From $128.02
91 Products
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4WP PROTECTION PLAN
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Yukon Ford 9" 28 Spline Spider Gear Kit - YPKF9-P-28-2
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 28 spline axles
- 2 pinion design
- Spider gear kit
- Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- Actual product may vary photo used for illustration purposes
- California Residents: WARNING + View More Specs - View Less Specs
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We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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Qualifies for Free Shipping
$283.89
Only 1 left in Stock ?
$283.89
Only 1 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 28 spline axles
- 2 pinion design
- Spider gear kit
- Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- Actual product may vary photo used for illustration purposes
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Yukon Ford 9" 28 Spline Trac Loc Differential (Aggressive Design) - YDGF9-28-AG
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- Fits all gear ratios
- Fits 9" Ford with 28 spline axles
- Fully rebuildable design and proudly assembled in the USA
- Limited slip differential with composite clutches
- All units are backed by extensive product testing and state-of-the-art software design
- Yukon Dura Grips feature 4320 chromoly spider gears for ultimate durability
- 4 pinion design
- Aggressive design
- Gears are cut to provide the strongest teeth possible in any terrain
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$799.89
In-Stock Ships next business day ?
Yukon Ford 9" 28 Spline Trac Loc Differential (Aggressive Design) - YDGF9-28-AG
Part #: YKGYDGF9-28-AG$799.89
In-Stock Ships next business day
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- Fits all gear ratios
- Fits 9" Ford with 28 spline axles
- Fully rebuildable design and proudly assembled in the USA
- Limited slip differential with composite clutches
- All units are backed by extensive product testing and state-of-the-art software design
- Yukon Dura Grips feature 4320 chromoly spider gears for ultimate durability
- 4 pinion design
- Aggressive design
- Gears are cut to provide the strongest teeth possible in any terrain
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Yukon Gear & Axle Ford 9" Trac Loc (Aggressive Design) - YDGF9-31-AG
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- Fits Ford 9 inch with 31 spline axles
- Trac Loc positraction
- Clutch style positraction
- Aggressive design
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$795.89
In-Stock Ships next business day ?
$795.89
In-Stock Ships next business day
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- Fits Ford 9 inch with 31 spline axles
- Trac Loc positraction
- Clutch style positraction
- Aggressive design
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Reset Password
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Enter email address to change your password
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Yukon Gear & Axle Ford 9" 31 Spline Grizzly Locker - YGLF9-31
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Fits Ford 9 inch with 31 spline axles
- Patented internal design reduces common locker failures
- 8620 internals for added strength
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$899.89
Only 1 left in Stock ?
$899.89
Only 1 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Fits Ford 9 inch with 31 spline axles
- Patented internal design reduces common locker failures
- 8620 internals for added strength
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
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Auburn Gear Grip-N-Loc Limited Slip Differential - 546036
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 2 left in Stock ?- Fitment: Universal Fit
- Ford 9" 10 Bolt, 31T, 57-85
- Upgrades vehicles for safe transfer of increased power/torque across the axle
- Case material is Up to 50% stronger than OE cases
- Advanced cone clutch technology provides 25% increase in bias ratio/increased traction
- Exclusive 2 year warranty
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$749.99
Only 2 left in Stock ?
$749.99
Only 2 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 2 left in Stock ?- Fitment: Universal Fit
- Ford 9" 10 Bolt, 31T, 57-85
- Upgrades vehicles for safe transfer of increased power/torque across the axle
- Case material is Up to 50% stronger than OE cases
- Advanced cone clutch technology provides 25% increase in bias ratio/increased traction
- Exclusive 2 year warranty
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
After you submit your email address, you'll receive an email a link that will let you change your password.
Choose Your Secure Checkout Method
Create An Account
Add to Wishlist
Auburn Gear Grip-N-Loc Limited Slip Differential - 546043
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 4 left in Stock ?- Fitment: Universal Fit
- Ford 9" 10 Bolt, 28T, 57-85
- Upgrades vehicles for safe transfer of increased power/torque across the axle
- Case material is Up to 50% stronger than OE cases
- Advanced cone clutch technology provides 25% increase in bias ratio/increased traction
- Exclusive 2 year warranty
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$750.99
Only 4 left in Stock ?
$750.99
Only 4 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 4 left in Stock ?- Fitment: Universal Fit
- Ford 9" 10 Bolt, 28T, 57-85
- Upgrades vehicles for safe transfer of increased power/torque across the axle
- Case material is Up to 50% stronger than OE cases
- Advanced cone clutch technology provides 25% increase in bias ratio/increased traction
- Exclusive 2 year warranty
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
After you submit your email address, you'll receive an email a link that will let you change your password.
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Motive Gear Ford 9.0 Inch 3.50 Ratio Ring and Pinion - F9-350
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- For Use With All Ratio Carriers
- Forged 8620 Steel
- Heat Treated
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$319.99
Only 1 left in Stock ?
$319.99
Only 1 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- For Use With All Ratio Carriers
- Forged 8620 Steel
- Heat Treated
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
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Enter email address to change your password
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USA Standard Ford 9" Master Overhall Kit - ZKF9-B
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Fits Ford 9" with LM501310 carrier race
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pilot bearing, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$214.89
Only 1 left in Stock ?
$214.89
Only 1 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Fits Ford 9" with LM501310 carrier race
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pilot bearing, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
After you submit your email address, you'll receive an email a link that will let you change your password.
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USA Standard Ford 9" Master Overhall Kit - ZKF9-HDC
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Fits Ford 9" with LM603011 carrier races and Daytona pinion support
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, pilot bearing, thread locker, marking compound with brush and gasket
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$274.89
Only 1 left in Stock ?
$274.89
Only 1 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 1 left in Stock ?- Fitment: Universal Fit
- Fits Ford 9" with LM603011 carrier races and Daytona pinion support
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, pilot bearing, thread locker, marking compound with brush and gasket
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
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ARB Ford 9 Inch 35 Spline Air Locking Differential - RD99
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 4 left in Stock ?- Fitment: Universal Fit
- For Use With 35 Spline After Market Axles
- For Use with Aftermarket 3.250 Bore Case
- Air Activated Selectable Locker
- Converts From Open Differential To fully Locked Or Spool
- Simple Push Button Operation
- Requires Air Compressor Sold Separately
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$1,158.00
Only 4 left in Stock ?
$1,158.00
Only 4 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 4 left in Stock ?- Fitment: Universal Fit
- For Use With 35 Spline After Market Axles
- For Use with Aftermarket 3.250 Bore Case
- Air Activated Selectable Locker
- Converts From Open Differential To fully Locked Or Spool
- Simple Push Button Operation
- Requires Air Compressor Sold Separately
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
After you submit your email address, you'll receive an email a link that will let you change your password.
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ARB Ford 9 Inch 31 Spline Air Locking Differential - RD119
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- For Use With 31 Spline Axles
- For Use With All Ratios
- Air Activated Selectable Locker
- Converts From Open Differential To fully Locked Or Spool
- Simple Push Button Operation
- Requires Air Compressor Sold Separately
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$1,091.00
In-Stock Ships next business day ?
$1,091.00
In-Stock Ships next business day
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- For Use With 31 Spline Axles
- For Use With All Ratios
- Air Activated Selectable Locker
- Converts From Open Differential To fully Locked Or Spool
- Simple Push Button Operation
- Requires Air Compressor Sold Separately
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Eaton Detroit TrueTrac Ford 8.8 Inch 31 Spline Rear Differential - 913A561
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- For Use With 31 Spline Axles
- For Use With All Gears
- For Use In Rear Applications Only
- Automatic Torque Biasing
- Smooth Actuating
- Clutchless Operation
- California Residents: WARNING + View More Specs - View Less Specs
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Qualifies for Free Shipping
$699.99
$760.86
In-Stock Ships next business day ?
$699.99
$760.86
In-Stock Ships next business day
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- For Use With 31 Spline Axles
- For Use With All Gears
- For Use In Rear Applications Only
- Automatic Torque Biasing
- Smooth Actuating
- Clutchless Operation
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Eaton Detroit TrueTrac Ford 9 Inch 31 Spline Rear Differential - 913A586
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 2 left in Stock ?- Fitment: Universal Fit
- For Use With 31 Spline Axles
- For Use With All Gears
- For Use In Rear Applications Only
- Automatic Torque Biasing
- Smooth Actuating
- Clutchless Operation
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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Qualifies for Free Shipping
$639.99
$695.64
Only 2 left in Stock ?
$639.99
$695.64
Only 2 left in Stock
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 2 left in Stock ?- Fitment: Universal Fit
- For Use With 31 Spline Axles
- For Use With All Gears
- For Use In Rear Applications Only
- Automatic Torque Biasing
- Smooth Actuating
- Clutchless Operation
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Eaton Ford 9" Master Install Kit - K-F9.289CB
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 2 left in Stock ?- Fitment: Universal Fit
- Fits 2.895 carrier bearing: LM102910, LM102949
- Standard Pinion Support: M88048, M88010
- 9" 28/31 spline 2.895
- California Residents: WARNING
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$109.99
$146.73
Only 2 left in Stock ?
$109.99
$146.73
Only 2 left in Stock
?
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EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
Only 2 left in Stock ?- Fitment: Universal Fit
- Fits 2.895 carrier bearing: LM102910, LM102949
- Standard Pinion Support: M88048, M88010
- 9" 28/31 spline 2.895
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Ford 9" Differential Cover Gasket - LLR-C900
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- Ford 9"
- No additional sealant needed
- Elastomer beading on both sides of gasket
- No setup time
- California Residents: WARNING + View More Specs - View Less Specs
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Qualifies for Free Shipping on Orders Over $99
$29.99
In-Stock Ships next business day ?
$29.99
In-Stock Ships next business day
?
LOW PRICE GUARANTEE
EASY RETURNS
How to Get it
Free! Curbside & In-Store Pickup: Select A Store Near You
Ship to Home:
In-Stock Ships next business day ?- Fitment: Universal Fit
- Ford 9"
- No additional sealant needed
- Elastomer beading on both sides of gasket
- No setup time
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Yukon Ford 9" 28 Spline Spider Gear Kit - YPKF9-P-28-4
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 28 spline axles
- 4 pinion design
- Spider gear kit
- Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- Actual product may vary photo used for illustration purposes
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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Qualifies for Free Shipping
$316.89
On Backorder
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$316.89
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- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 28 spline axles
- 4 pinion design
- Spider gear kit
- Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- Actual product may vary photo used for illustration purposes
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Part Number: YKGYPKF9-P-28-REB
Yukon 9" 28 Spline Spider Gear Kit - YPKF9-P-28-REB
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 28 spline axles
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, clutch hub, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$487.89
On Backorder
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$487.89
On Backorder
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Email me when this product comes in stock
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EASY RETURNS
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 28 spline axles
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, clutch hub, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-P-31-4
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 31 spline axles
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- Does not contain clutches or the clutch hub
- 1 year warranty against Manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$316.89
On Backorder
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$316.89
On Backorder
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 31 spline axles
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- Does not contain clutches or the clutch hub
- 1 year warranty against Manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Part Number: YKGYPKF9-P-31-REB
Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-P-31-REB
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 31 spline axles
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- Includes clutches and clutch hub
- 1 year warranty against Manufacturer defects
- Actual product may vary photo used for illustration purposes
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$487.89
On Backorder
Contact Us for Availability or Alternatives
LOW PRICE GUARANTEE
EASY RETURNS
Email me when this product comes in stock
LOW PRICE GUARANTEE
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$487.89
On Backorder
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Fitment: Universal Fit
- Ford 9" with Trac Loc positraction
- 31 spline axles
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- Includes clutches and clutch hub
- 1 year warranty against Manufacturer defects
- Actual product may vary photo used for illustration purposes
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
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Enter email address to change your password
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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-S-31-2
- Fitment: Universal Fit
- Ford 9" open differential
- 31 spline axles
- 2 pinion design
- Spider gear kit
- Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$283.89
On Backorder
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$283.89
On Backorder
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Fitment: Universal Fit
- Ford 9" open differential
- 31 spline axles
- 2 pinion design
- Spider gear kit
- Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
- 1 year warranty against manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-S-31-4
- Fitment: Universal Fit
- Ford 9" open differential
- 31 spline axles
- 4 pinion design
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, roll pins and spider gear thrust washers
- 1 year warranty against manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
Qualifies for Free Shipping
$317.89
On Backorder
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$317.89
On Backorder
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Fitment: Universal Fit
- Ford 9" open differential
- 31 spline axles
- 4 pinion design
- Spider gear kit
- Includes two side gears, four pinion gears, cross pin shaft, roll pins and spider gear thrust washers
- 1 year warranty against manufacturer defects
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
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Enter email address to change your password
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Yukon Gear & Axle Ford 9 Inch, 31 Spline Zip Locker - YZLF9-31
- Fitment: Universal Fit
- Fits Ford 9 inch with 31 spline axles
- Forged case and 8620 internals for added strength
- Works with a variety of air delivery systems
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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Qualifies for Free Shipping
$940.13
$1,027.09
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$940.13
$1,027.09
On Backorder
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LOW PRICE GUARANTEE
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- Fitment: Universal Fit
- Fits Ford 9 inch with 31 spline axles
- Forged case and 8620 internals for added strength
- Works with a variety of air delivery systems
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Yukon Gear & Axle Ford 9" 35 Spline Zip Locker - YZLF9-35
- Fitment: Universal Fit
- Fits Ford 9 inch with 35 spline axles
- Forged case and 8620 internals for added strength
- Works with a variety of air delivery systems
- Assembled in the USA
- Note: 2.000" bearings journals use LM140911 - LM104949 carrier bearings
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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Qualifies for Free Shipping
$1,251.89
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$1,251.89
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Fitment: Universal Fit
- Fits Ford 9 inch with 35 spline axles
- Forged case and 8620 internals for added strength
- Works with a variety of air delivery systems
- Assembled in the USA
- Note: 2.000" bearings journals use LM140911 - LM104949 carrier bearings
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Yukon Gear & Axle Ford 9" Trac Loc (Street Design) - YDGF9-28-SM
- Fitment: Universal Fit
- Fits Ford 9 inch with 28 spline axles
- Trac Loc positraction
- Clutch style positraction
- Street design
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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Qualifies for Free Shipping
$799.89
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$799.89
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EASY RETURNS
- Fitment: Universal Fit
- Fits Ford 9 inch with 28 spline axles
- Trac Loc positraction
- Clutch style positraction
- Street design
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
Lowest Price! Guaranteed! Request A Price Match
