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Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.
( 487 )
$560.00
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$814.99
Yukon Gear & Axle Dura Grip positraction carriers offer great traction and strength, and yet are not overly aggressive for the streets. These nodular iron or steel replacements are 4-spring, Raybestos composite, clutch-style, limited-slip carriers—with internal gears machined from forged 4320 steel with stronger teeth. Assembled in the USA, the Yukon differential carriers are rebuildable, allowing for repairs or modifications without buying a new unit. They're available for fitment with nearly two dozen axle models. What are you using to transfer power? Choose smooth operation with strong lockup abilities to transfer torque—benchmarks of the Yukon Gear & Axle Dura Grip positraction carriers.
( 128 )
$538.00
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$834.99
Big torque doesn't have to mean big traction problems. Eaton Posi Performance differentials combine carbon friction discs with precision-forged gears to give you great traction, even under higher torque loads. Plus, the carbon friction discs produce smooth, quiet performance for the life of your vehicle.
( 102 )
$633.44
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$788.99
Yukon Gear & Axle ring and pinion gear and installation kit combos are complete packages that include front, rear, or front and rear ring and pinion sets, along with the most complete master overhaul kits on the market—giving you everything needed to re-gear the front and/or rear differentials in one package. Conceived to handle some of the harshest conditions, these combos utilize the latest design and manufacturing technologies to afford you quiet running gear that's strong and easy to set up. The included Yukon master rebuild kits undergo extensive research to ensure a perfect fit and hassle-free install with the very best components. Order the combo designed to fit your application.
( 12 )
$513.99
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$795.99
When it comes to high-horsepower applications, Rhodes Race Cars fabricated Ford 9 in. housings are the only way to go. Available in 48 in. and 60 in. lengths, all the kits feature face plates with 3/8 in. press-in studs, billet aluminum fill caps, and drain fittings. Mild steel housings have 3 in. axle tubes; chromoly housings use 3 1/2 in. axle tubes. They are available with many different options--get one for your ride today. Un-welded kits require a rear end housing fixture (sold separately) to ensure proper axle alignment. Welded kits are available from mild to wild for a wide range of horsepower applications and feature: * Housing ends of your choice * 4-link or ladder bar brackets * Mild steel or chromoly back braces
( 17 )
$549.95
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$789.95
On Sale
Summit Racing™ Positraction differential carriers deliver aggressive, yet smooth, controllable traction. Our carriers feature nodular iron cases, forged steel internals, strong teeth—and they're fully rebuildable. We offer fitments for dozens of axle models. Whether replacing or upgrading, Summit Racing™ Positraction differential carriers will put power to the pavement, providing the confidence and performance you need.
( 49 )
$729.99
$568.99
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$730.99
Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicles. Their gear sets are made from first-run steel, they never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high-horsepower racing engines. Extensive engineering, computer-controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in their in-house lab. Motive Gear Performance also offers a lightweight alternative to standard ring and pinion gear sets. Their AX Series ring and pinions are designed to increase horsepower and efficiency by removing rotating weight. Professional race teams have used custom-lightened drivetrain parts for years, resulting in faster times and more wins. The AX Series gears from Motive are lightened during the manufacturing process; this results in gear sets that have been engineered, not modified. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into AX Series performance gear sets. Motive Gear Performance: What the pros run!
( 194 )
$501.99
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$877.99
Richmond Gear Pro Gear ring and pinion sets take it a step further. The gear sets are designed for race use only where hard launches and severe heat cycling occurs. They're made from a softer, more malleable 9310 steel alloy to be more resistant to breakage under harsh racing conditions. These gears feature an outstanding rotating weight loss of up to 6 pounds, ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
( 39 )
$522.71
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$770.99
Richmond Gear is the leading manufacturer of professional-quality, high performance ring and pinion sets. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Richmond also offers these gear sets in a lightened version for the weight-conscious enthusiast. Their lightened ring and pinion sets feature an outstanding rotating weight loss of up to 6 lbs., ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
( 313 )
$502.99
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$700.99
Whether starting a new project or replacing an old part, you'll find what's needed with Spicer Drivetrain Products differential carrier cases. Spicer supplies carriers to many OE manufacturers, so the replacement units are every bit as tough as the originals. They'll accept all factory and most aftermarket internal parts, allowing for modifications. Going mild or wild … Spicer Drivetrain differential carrier cases are the place to start. Order the model recommended for your vehicle and axle application.
( 18 )
$535.99
GForce Level 2 inner axles stubs are direct replacements for factory stub-shafts and are designed for cars with mild bolt-ons to those running superchargers and turbos. Their L2 stubs are meticulously designed, machined, and assembled in-house from billet steel featuring a premium alloy, offering significant strength over stock units. GForce Level 2 stubs are CNC-machined and treated with an aerospace anti-corrosion E-coating for lasting performance.
Not Yet Reviewed
$749.00
Built to exceed your expectations, Auburn Gear provides a variety of Grip-N-Loc differentials to match most makes and models. They build upon exclusive technologies previously found in their limited slip line—but with more robust construction and materials to satisfy the extreme demands of serious drivers. If you push the limits of performance and traction, perhaps through competition, or simply through extreme weather driving, Auburn Gear Grip-N-Loc differentials offer the best options to fit your application! More product features include: * Upgrades your vehicle for the safe transfer of increased power/torque across the axle * Case material is up to 50 percent stronger than OE cases * Advanced cone clutch technology provides a 25 percent increase in bias ratio/increased traction * Hardened-steel gear materials for confidence in extreme conditions * 2-year warranty
( 17 )
$514.99
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$794.99
Eaton Detroit lockers are designed to maximize traction by delivering 100 percent of the torque and power to both drive wheels. They are engineered to keep both wheels in a constant drive mode and have the ability to automatically allow wheel speed differentiation when required.
( 80 )
$713.99
Yukon Gear & Axle ring and pinion sets are strong but quiet performers. Designed to handle some of the harshest conditions, these sets utilize the latest design and manufacturing technologies to afford you a smooth running gear that's durable and easy to set up. Yukon ring and pinions are available in hundreds of size, ratio, and axle model options. Whether you're on the street, off-road, or at the track, you'll experience unrivaled power and gear performance. Order the model recommended for your application.
( 172 )
$502.99
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$833.99
Extra beef for your rock crawler—Longfield axle shaft and Birfield joint kits put the brawn back into your fun. Stock axles and joints just don't have the strength to deal with larger tires and additional horsepower. Longfield kits furnish you with robust 100 percent chromoly components that are critical for you to "make the grade." So, go where you want, run any trail, and adventure with confidence—knowing your rig's equipped with Longfield axle shaft and Birfield joint kits. Order model designed for your vehicle and axle application.
( 7 )
$642.63
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$741.89
These 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. Special gear and spring designs reduce the backlash and, therefore, the driveline windup. Only ultra-strength material that is 67 percent stronger than titanium is used. Installation is simple because no ring and pinion setup is required. In addition, no special tools or oils are needed. Step-by-step, model-specific instructions are provided with every kit.
( 81 )
$509.99
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$806.99
When you push your Cobra to the limit in the corners, you may be applying enough force to twist the differential cover beyond its ability to flex. Repeatedly doing this causes the metal in the differential cover to separate, leaving you stranded. Steeda has come up with a solution to fix this problem. By attaching one of these Steeda differential braces, you will be adding strength and peace of mind to your differential cover. Steeda designed these cover braces with a hole to allow you to access the oil fill plug without having to remove the braces.
Not Yet Reviewed
$549.95
Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver or a full-competition 4x4 or race car. They are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear ring and pinion sets are engineered to meet or exceed OEM specifications at a price that won't break your budget. Their broad selection of ring and pinion ratios is available for just about every vehicle made from the 1940s through the present. All Motive Gear products meet strict quality standards through advanced manufacturing techniques and are backed by their strong warranty. Their in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged and ready for delivery.
( 281 )
$500.99
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$903.99
Off-roaders, before you hit the trails, it's a good idea to prepare your vehicle for the inevitable rough terrain. Summit Racing™ axle upgrade combos include a set of bigger-spline front axles, U-joints, and your choice of manual locking hubs or a hardcore drive flange kit. These upgrade combos ensure that you've installed the right equipment for off-road adventures. Find the package for correct fitment on your particular make and model!
( 2 )
$672.95
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$690.95
Avoid premature failure with Spicer Drivetrain Products differential inner gear kits. Containing the only parts engineered to meet Dana specifications for strength and durability; these kits have everything you need to rebuild your differential case. Forged for longer life in Dana axles, you'll receive spider gears and side gears with shims, as well as the cross shaft and retainer pin. Choose top performance differential inner gear kits manufactured by a legendary name--Spicer.
( 23 )
$658.99
Yukon Gear & Axle master overhaul kits are what you need for a successful differential rebuilding. All of the high-quality parts that you need are provided to do your job right. Yukon master kits go through extensive research to ensure a perfect fit and hassle-free install utilizing the best components, including Timken bearings and races! Choose from their huge selection of kits to meet your replacement application. Yukon Gear & Axle master overhaul kits may include: * Pinion bearings * Carrier bearings * Pinion seal * Crush sleeve or preload shims * Pinion depth shims * Carrier shims (varies by application) * Gear marking compound and brush * Pinion nut * Baffles and slingers (varies by application) * Gasket and/or silicone * Ring gear bolts (for application) * 20-page instruction manual
( 102 )
$500.99
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$828.99
Are you struggling for traction, or just have some terrible noise coming from the GM 12-bolt in your truck? Hurst limited-slip differentials offer great traction and strength but are not overly aggressive for the street. These differentials are 4-spring, composite, clutch-style, limited-slip carriers with internal gears machined from forged 4320 steel and stronger teeth. Get rid of that old open differential and upgrade to a limited-slip unit from Hurst. Choose the best gear ratio for your truck. Key features: * Fits 12T GM with 30-spline axles * Composite clutches for great drivability * 4320 chromoly spider gears for ultimate durability * Gears are cut to provide the strongest teeth possible in any terrain
( 2 )
$649.95
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$677.95
Errrr, bang! Clunk clunk clunk. Very few parts last forever, especially those rotating at a high rate of speed. Spicer Drivetrain Products ring and pinion gears are perfect for replacing worn or damaged gears, changing ratios, or when refreshing the differentials. They hob and shave the gears for longevity with minimal mating stress, combine modern designs and materials including heat-treating and shot-peening to maximize life, and use high-grade steel for consistency and exceptional durability. Each gear set meets or exceeds Dana's standards for OEM equipment. Whether you need lower, higher, or the same ratio gears, look into Spicer Drivetrain ring and pinion gears with installation kit, available for hundreds of applications.
( 12 )
$514.99
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$814.99
Powertrax Lock-Right and performance lockers' straight-line performance is equal to a solid spool axle, yet they automatically unlock to allow for full differentiation in turns. They also reduce the excessive noise, tire wear, and drivetrain damage associated with other lockers. Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.
( 145 )
$502.99
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$861.99
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