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Ford Performance Parts 8.8 in. IRS loaded differential housings are improvements to the rear axle of your Mustang. Whether you're replacing the original in your manual or strengthening the cast aluminum model in your automatic, there's nothing better than Ford Performance differential housings to do the job perfectly. Besides, who knows your Mustang better than the maker? These 8.8 in. IRS housings are fully loaded with forged, and CNC-cut gear sets installed. They feature strong cast iron topped with an aluminum differential cover, and, depending on the application chosen, a Torsen or Traction-Lok differential is included. If your automatic sees a lot of track time or your manual has a broken housing, your only choice should be genuine Ford Performance 8.8 in. IRS loaded differential housings.
( 3 )
$1,189.99
Ford Performance Parts Torsen differentials use a worm gear friction system that will not wear out like conventional clutch-type positive traction differentials. These differentials ensure your engine's power is transferred to the wheels with the maximum traction. The unique torque-sensing ability of the Torsen design, and the smooth engagement of Torsen-style limited-slip differentials, make them the perfect choice for your street, strip, or off-road vehicle.
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$1,044.99
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$1,139.99
Beef up your GM chassis for less with 9 in. non-floater offset housing kits from Allstar Performance. These kits fortify your 1978-88 GM intermediate chassis with much stronger Ford 9 in. style. Allstar offset housing kits are delivered with 31-spline axles with bearings and seals installed, a select used center section, and new axle tubes with large-bearing late Ford/Torino-style ends. Choose between two available lengths. Give your GM rear-end some brawn with non-floater offset housing kits from Allstar Performance.
( 1 )
$1,169.99
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!
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$1,085.43
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$1,456.99
RCV Performance Ultimate CV axles simply replace your weak axle shafts with a high-strength design. Tests prove they are twice as strong as OEM shafts, and they're just as tough at a straight angle as they are at extreme angles. Even if you have big tires and big power, there are no worries. Ultimate CV axles are low maintenance and operate with a smoothness you can feel--whether off-road or on the street. And they back it all with a "No Questions Asked" limited lifetime warranty. Available for many vehicles, select the RCV Ultimate axle set designed for truck, SUV, or Jeep.
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$1,399.95
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$1,499.95
Clearance
Winters track differentials are standard equipment in all Championship Independent assemblies. Available in 31 and 35-spline models, they are CNC-machined to exacting tolerances. These virtually unbreakable, parallel gear designs are race proven and automatically sense wheel spin to deliver positive traction.
Not Yet Reviewed
$1,952.99
$1,449.50
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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.
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$1,013.99
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$1,279.99
On Sale
A 4x4 and traction go hand-in-hand; however, standard (open) differentials allow each wheel to turn independently to eliminate binding in turns. Off-road, this becomes a problem as engine power takes the path of least resistance—to the wheel with little or no traction. Limited slip differentials offer some improvement, but too often the slipping is not "limited" enough to maintain forward progress. Automatic locking differentials also have disadvantages; noisy when disengaging, they can also upset on-highway driving characteristics. Created to provide traction on demand, without sacrificing highway driving performance, ARB Air Locker differentials employ a 12 V ARB air compressor (sold separately) to pneumatically operate a solid and durable locking mechanism inside the differential. When activated, the Air Locker prevents the differential gears from rotating and the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates just like a conventional open differential. ARB Air Lockers are available in over 100 configurations for a wide range of vehicles and can be installed in both front and rear axles. Installation should be performed by a qualified differential technician, although no special tools or skills are required, apart from those necessary for fitting a standard differential. ARB also offers three compressor models suitable for Air Locker operation, two of which can be used to inflate tires and operate other equipment. Additional features of ARB Air Lockers include: * Vastly improved traction means less reliance on momentum, reducing the likelihood of vehicle damage * Easy, convenient operation without leaving the comfort and safety of the driver's seat * Ultra durable and extremely strong; only the highest quality materials used in construction * Patented gear technology and 2-piece design ensures optimal locking strength * Forged gears provide superior strength and durability * Incredibly simple, yet effective, design employs minimal moving parts for maximum reliability * Thoroughly tested and proven * Most sold as kits with differential, activation switch, solenoid valve, air line, and bulkhead fittings * Front and rear Air Lockers available for most makes and models * For 4WD and 2WD applications * Easy maintenance; no special additives required * Also offered in ARB Traction Packs that include two Air Lockers, a compressor, and accessories for tire inflation
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$1,299.95
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$1,499.95
$1,104.96
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$1,274.96
GForce Renegade axle shafts offer big league strength and performance at a fair price point. They're direct replacements for your factory half-shafts and are designed for cars with everything from mild bolt-ons to those running superchargers and turbos. CNC-machined from proprietary aerospace billet alloy, Renegade axles feature upgraded spline counts on the axle bar and CV joints—providing more engagement. This allows for larger diameter bars equaling more strength, as well as more travel and increased operating angle over OEM CV joints. GForce Renegade axle shafts are a leap above entry-level, with hand-built assemblies utilizing premium materials and carefully controlled processes. Order the pair recommended for your vehicle application. Features include: * Anti-wheel hop technology—significant reduction during hard launches * Direct bolt-in fit and finish * 31-spline severe-duty CVs * Stronger one-piece CNC-machined inner and outer stubs * Powdercoated axles for corrosion protection * Black E-coat finish on inner and outer stubs to protect against harsh conditions, without impeding spline engagement
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$1,199.00
What kind of hidden performance does your vehicle possess that's ready to be unleashed? Spicer Drivetrain Products differential carriers supply the power for you to find out! You can increase your off-road traction, maintain streetability, and get ready to rock and roll in your truck or Jeep with the selection of carriers offered by this legendary manufacturer. Spicer goes above and beyond so your rig can do the same! Order the model and options recommended for your vehicle.
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$1,021.99
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$1,581.99
Eaton NoSPIN differentials maximize traction by delivering 100 percent of the torque and power to both drive wheels. They're engineered to keep both wheels in a constant drive mode, yet have the ability to automatically "unlock" during vehicle turning to permit necessary wheel speed differentiation. NoSPIN models are trouble-free and do not require special lubricants or service adjustments. These differential carriers are available for a wide range of differential case design types and axle manufacturers. Core features: * Works in forward and reverse * 100 percent automatic locking action - even with one wheel off the ground * Provides a fully locked rear axle that automatically unlocks with wheel speeds are different. * Legendary durability and proven performance in a wide variety of applications. * Applies all available torque to wheel with most traction to overcome most any terrain challenge.
Not Yet Reviewed
$1,033.99
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$1,469.99
Spidertrax Off-Road Spider 9 axle housings step up the level of performance and looks of today's off-road machines. Building on the platform of the company's top placing housings, the latest Spider 9 housing is stronger (ARP studs, accepts 9 in. and 10 in. gears), more versatile (68 in. OAL, works with standard and mid-engine setups), and just downright sexier (TIG-welded on outside, machined face). If you're looking for many of the 9 in. housing benefits, at a fraction of the price, Spider 9 housings are the perfect solution. Every Spider 9 housing comes with third member ARP studs and Nylocks. Fill bungs and caps are sold separately. Additional details: * Strong: Every Spider 9 housing is constructed with a one-piece 1/4 in. thick shell, a 3/8 in. thick face plate, and 3 1/2 in. x 1/4 in. wall axle tubes. Spidertrax also redesigned the faceplate to allow the use of both 9 in. and 10 in. gears. * Secure: Best to keep those 9 in. and 10 in. gears where they belong, inside your Spider 9 housing. That's why Spidertrax redesigned the shell to work with ARP studs. No matter how many miles, your third member will always stay tight. * Complete: All Spider 9 housings are precision-machined for genuine ARP third member studs, included with every order. Plus, at 68 in. in length, these off-the-shelf housings work for almost any off-road application. One housing, everything you need.
Not Yet Reviewed
$1,099.00
On Sale
Yukon Gear and Axle offers an extensive line of general replacement and high performance axles for passenger car, truck and SUV applications. Yukon Gear & Axle 4340 chromoly axles provide up to 50 percent more strength than stock axles … critical for extreme performance applications with large tires, high torque and high horsepower. These 4340 axles are manufactured using the latest technologies and the highest quality materials for long life in off-road, street and track use. Yukon Gear & Axle 4340 chromoly axles are offered in complete kits or individually.
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$1,115.99
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$1,695.99
$1,003.84
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$1,441.59
On Sale
Clearance
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.
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$1,600.99
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$1,867.99
$1,339.50
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$1,587.79
On Sale
Beef up your rear-end with Trail-Gear Rock Assault rear axle housings. Better trail performance comes in the shape of fabricated, thick steel center sections and differential mounting surfaces, heavy-duty DOM axle tubes, and 4130 chromoly flanges. Plus, Trail-Gear engages the tubes further into the center section, with a 360 degree gusset welded around the tubes on the inside of the housing, to ensure that your rig is strong enough to go wherever you want! Rock Assault's overall design also offers additional clearance under the axle tubing and differential, providing more height to climb over those big boulders. Outfit your rig to be extremely tough with the rugged, high-clearance design of Trail-Gear Rock Assault rear axle housings.
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$1,199.99
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$1,499.99
$1,019.99
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$1,274.99
On Sale
Trail-Gear assembled third members are off-road strong! These units are built with all-new housings and internal parts and are delivered ready for you to drop into your axle. TG assembled third members feature top-quality ring and pinion gears, lockers, solid pinion spacers for long gear life, and they include triple-drilled flanges to cover common driveshaft patterns. The V6 units feature larger OEM-style V6 gear sets with longer pinion gear. Choose your locker style, case style, and gear ratio for off-road performance from Trail-Gear's selection of assembled third members.
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$1,375.10
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$1,557.68
$1,210.09
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$1,401.91
Zumbrota Drivetrain remanufactured axle assembles offer reliable performance at a value price. They're available for thousands of applications—from passenger and off-road vehicles, to race cars and pulling trucks. The axle tubes are straightened to OE specifications; the housings are hydro-blasted and rinsed, then tested for surface wear and cracks; and the gear patterns and rolling torque are properly adjusted to ensure optimum tooth contact. Zumbrota replaces all seals, bearings, crush sleeves, pinion nuts, and shims on the front and/or rear axle assemblies. Order the replacement model recommended for your specific vehicle.
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$1,075.99
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$1,553.99
On Sale
Yukon Gear & Axle Grizzly lockers offer fierce power! These robust lockers are the ultimate mechanical locking differentials, replacing your entire carrier assembly. Yukon Grizzly lockers feature forged cases with 8620 internals and a patent-pending internal locking mechanism for maximum strength. Assembled in the USA, these lockers will provide 100 percent power to both your tires, while still allowing for disengagement while negotiating turns. Whether your application is for the street, off-road, or drag racing, Yukon Gear & Axle Grizzly lockers will have your rig roaring with performance.
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$1,196.99
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$1,297.99
$1,017.44
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$1,103.29
On Sale
Currie 9 in. crate rear end assemblies offer a direct-fit, bolt-in solution for most common car, truck, and Jeep platforms. They feature larger spline axles, heavy-duty components, and internals from leading manufacturers. These axle assemblies are built to exacting standards matching factory specifications for suspension mounting points, pinion location, overall axle width, and wheel bolt pattern for hassle-free installation. Prior to shipping, skilled craftsman meticulously assemble essential parts to deliver years of trouble-free operation for your vehicle. They offer a broad range of gear ratios, performance differentials, or even a spool—if that's your thing. You'll be ready in no time for cruising, racing, off-roading, or just daily driving with Currie 9 in. crate rear end assemblies. Order the kit designed to fit your specific model.
( 4 )
$1,550.00
$1,395.00
Sierra Marine upper gear kits replace old worn gears with renewed performance. Offering an OE fit and function, Sierra's selection includes kits with gears, gears and seals, and kits with gears, seals, gaskets, and bearings to service different applications.
Not Yet Reviewed
$1,155.99
On Sale
USA Standard gear axle shafts are high-quality replacements machined from steel for superior strength and performance. They're available for dozens of differential case design applications, such as AMC, Ford, GM, Chrysler, and Dana. The shafts are offered in nearly a hundred lengths and numerous wheel stud patterns. Order the model recommended for your vehicle.
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$1,308.99
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$1,756.99
$1,112.64
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$1,493.44
On Sale
Yukon performance spools are locked and loaded for maximum traction! Their full spools are crafted from high-quality steel and are heat-treated to provide 100 percent lockup for your drag racing or rock crawling adventures. And they're lighter and less expensive than a locker! You're ready to roll with enhanced traction, brute strength, and a long performance life when you install Yukon full spools.
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$1,185.99
$1,067.39
Spicer Drivetrain Products Trac-Lok differentials provide improved traction capability without requiring switches, wires, sensors, air hoses, or manual input from the driver. During a slip event, they automatically send approximately three times more torque to the high-traction wheel end, then returns to normal wheel-end differentiation as conditions change in order to deliver maximum vehicle handling. Automatic engagement, enhanced traction, and lightweight, Spicer Trac-Lok differential carriers ensure unparalleled performance for your vehicle.
( 1 )
$1,302.99
On Sale
Unleash the performance in your vehicle with Spicer Drivetrain Products ring and pinion gears! They're engineered to meet the specific original equipment standards of Dana axles, delivering a perfect fit with less noise, vibration, and harshness. All Spicer ring and pinions are built to the latest Dana designs—which include premium heat-treat processes and optimal tooth profiles, plus high-grade steel to achieve maximum durability. Even in the most demanding conditions, Spicer ring and pinion gears provide quality and unparalleled performance to genuine Dana axles. Order the set designed for your specific axle model application.
( 13 )
$1,039.99
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