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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.
( 499 )
$623.99
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$831.99
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.
( 104 )
$724.99
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$777.99
B&M Racing introduces the Precision SportShifter for 2007-18 Jeep Wrangler JK models equipped with the NSG370 6-speed manual transmission. The unit features a CNC billet aluminum case with an electric blue anodized finish which houses internal components made from super tough 4140 chromoly. The shift throw has been reduced by 35 percent over the factory shifter along with the detent pressure which has been significantly increased creating a noticeably stiffer shift feel. This was done to address problems with the softness of the factory shifter detent springs which easily pop out of gear while off-roading. The shifter uses the factory shift stick and knob.
( 12 )
$749.95
RT Off-Road slip yoke eliminator kits will keep your vehicles moving in the right direction. These kits include the necessary parts to convert the 231 transfer case to a rear fixed-style yoke, which not only provides great strength, but extends driveshaft length approximately 4 in., while reducing the angle. RT Off-Road provides a CV-style yoke, knowing that this style of driveshaft eliminates driveline vibrations and extends life. A properly lifted Jeep with the right aftermarket parts can explore all types of terrain. Keep from screaming for your life with RT Off-Road slip yoke eliminators.
( 4 )
$551.99
Clutches are subjected to continuous wear and tear. LuK clutch kits are made with premium quality components, engineered and manufactured to be problem-free. These kits are functionally tested to meet OEM performance specifications and provide an innovative and quality engineered clutch kit. As an original equipment supplier, LuK develops the performance specifications for individual vehicle applications.
( 381 )
$514.99
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$773.99
A higher-than-stock stall speed as delivered by these B&M Holeshot converters will provide several advantages and benefits to vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low-end power and torque. These high-stall converters allow the engine to launch the car at higher rpm, where more torque is available. They're a very good choice for the typical street machine that is looking for better launch capability and more strength.
( 83 )
$625.95
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$799.95
Ford Performance Parts 2005-10 Mustang GT one-piece driveshafts deliver peak endurance and optimum strength in increased horsepower applications. Ready to bolt on right out of the box, these direct-fit driveshafts provide reduced overall weight and rotating mass for improved driving performance with quicker acceleration. Features include: * 52.598 in. (1,336 mm) overall length (face of transmission flange to face of rear end flange dimension) * 3.5 in. diameter 6061-T6 aluminum tubing with .125 in. wall thickness provides exceptional strength and reliability * 1350 Series Dana Spicer 5-1350X solid body universal joints are stronger than the 1330 Series available for Mustangs * Comes with 1350 Series flange yoke to bolt to the transmission * Comes with 1350 Series flange yoke to bolt to the OE Mustang rear end flange (no adapter required) * Fully assembled and balanced * Spline-and-slip design allows for installation and suspension movement * Hard plastic boot keeps grease in and water out to protect spline and slip from contaminants * Eliminates the need for a center support bearing * Will not fit automatic transmission * Off-road use only
( 16 )
$689.99
On Sale
QuickTime bellhousings for Circle Track, strip, and street applications are built from high-grade steel. The cone is spun, not rolled or stamped, allowing these bellhousings to be the most dimensionally stable and accurate for today's high performance vehicles offering proven performance. Choose the size and specs needed for fitment on your particular vehicle, then bridge your transmission and engine with a QuickTime bellhousing.
( 106 )
$949.95
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$1,449.95
$712.95
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$812.95
Intended for high-horsepower street fans, the McLeod RST Street Twin clutch kits are economically priced twin disc clutches that use your existing flywheel. Able to handle up to 800 hp, the RST Street Twin clutches remain completely street-drivable. The organic lined clutch discs provide smooth engagement with a soft pedal effort, making these clutch kits ideal for the street performance enthusiast. (For select vehicles where these clutches are not adaptable to your existing flywheel, a new flywheel is included in the kit.) Here are some additional features of the McLeod RST Street Twin clutch kits: * Alignment tool included * Lighter-than-stock pedal feel * Will bolt to factory flywheel * CNC-machined and anodized flywheel adapter ring * Organic disc facing for smooth and even clutch engagement with excellent release qualities * Low rotating mass for quick revs * Blanchard ground floater with multiple straps to reduce noise for streetability
( 84 )
$825.00
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 )
$568.99
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$730.99
Hays Twister 3/4 Race performance torque converters are designed to be the perfect solution for your street/strip machine. Hays designed the Twister torque converters to be one step short of being a "Full Race" converter giving you the perfect combination of performance and affordability. Every torque converter is hand built, inspected and tested to ensure they meet the top of the line quality you expect. To ensure consistency and improve performance each converter is built for one transmission with one bolt pattern, meaning a lighter converter to maximize performance. High flow stators promote better cooling and heavy duty Torrington bearings are used to increase strength and durability. Not ready to go a "Full Race" converter, Hays is there for you with their Twister 3/4 Race torque converters.
( 11 )
$749.95
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$799.95
On Sale
These B&M Precision Sport shifters incorporate the latest technology from B&M in shifter development. They are CAD-designed using 3D printer prototypes to allow for different designs and materials, depending on your vehicle application. The shifters feature a fully isolated stick with a spherical pivot bearing that provides for extremely smooth operation and a 30 percent throw reduction. These shifters provide that quick, smooth, precise shifting you need, time and time again.
( 94 )
$699.95
Summit Bucks
Have to replace the differential carrier on your vehicle? ACDelco differential carriers are genuine OEM replacements with the fit of original equipment. Made with top-notch OEM-quality, these units are built to not only last, but keep your vehicle operating safely.
( 2 )
$580.99
Summit Bucks
Sonnax heavy-duty remanufactured valve bodies are built to overcome chronic shift and converter clutch apply complaints. It provides firmer shifts and a moderately increased pressure curve to improve performance, especially in truck and towing applications. Numerous Sonnax valve upgrades are included to restore hydraulic clearances that lead to shift complaints, clutch distress, converter complaints and codes, solenoid issues and pressure problems. Line pressure rise has been moderately increased to overcome shift complaints, delayed engagements, and to increase holding power to the clutches. To guarantee the highest level of operational performance, this remanufactured valve body is tested on state-of-the art equipment to verify that solenoid feed, clutch, converter, and line pressures match or exceed OE specifications. Choose your preferred kit packaged for your transmission. The valve body includes the following: * Oversized TCC regulator valve and sleeve, and limit valve spring for firmer TCC application * O-ringed bore plugs and abuse plugs * New accumulator control valve and sleeve with spring * Oversized AFL line up * New forward accumulator piston and seal * New pressure switch manifold * New EPC solenoid * New TCC PWM solenoid Kit contents: * Remanufactured valve body * Separator plate * Upper case gasket plate * Lower valve body gasket plate * 1-2, 3-4 accumulator springs * EPC solenoid harness adapter for 2003 to later units * Sonnax line pressure booster kit
( 3 )
$563.04
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$582.46
Summit Racing™ heavy-duty truck automatic transmission rebuild kits feature the necessary parts to rebuild your transmission while improving it to stand up to the higher torque diesel engines in front of them. These rebuild kits are an excellent choice for increased durability, performance, and increased holding capacity when carrying or towing heavier loads. Available for a variety of transmissions, the Summit Racing™ heavy-duty truck automatic transmission rebuild kits are each designed, tested, and provided with parts that are engineered and selected to work best in each actual application without adding extra cost where it is not needed. Kits include: * Clutches: G3 Powerpack, high-energy gray or red clutches * Performance, regular or Kolene steels * High performance band (where applicable) * Molded pistons (where applicable) * High performance transmission filter * Bushing kit * Washer kit * Overhaul gasket kit includes gaskets, seals, and lip seals
( 1 )
$738.99
Designed for spirited and daily driving, the South Bend Clutch Stage 1 clutch kits make for a great OEM replacement when your factory clutch gives out. The pressure plate included in this clutch kit has an increased clamp load that promotes longer life, and the disc is dual dampened for smooth engagement and increased transmission life. The disc has also been designed with premium friction materials, which will ensure for rapid heat dissipation and will help to increase the life of the clutch. Select the Stage 1 HD clutch kit designed for OE replacement or your performance application.
( 17 )
$500.02
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$903.37
Chevrolet Performance offers these clutch kits for many GM applications. Each kit is a direct replacement for the factory original and includes a pressure plate and clutch disc.
( 12 )
$549.99
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.
( 44 )
$522.17
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$748.99
Want to get back the power and gas mileage that you lost from installing those big tires on your Jeep? Motive Gear makes it easy to re-gear your 4x4 with their ring and pinion gear and installation kit combos. These complete kit combos include front and rear ring and pinion sets, plus front and rear bearing kits, giving you everything you need to re-gear the front and rear differentials in one package. The kits come in a wide range of ratios for most Dana applications. Their quality is the result of years of development, outstanding design, and state-of-the-art manufacturing methods to ensure a perfect fit for an easy install.
( 8 )
$610.21
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$912.87
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.
( 20 )
$584.99
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$774.99
Tilton's 6100-Series hydraulic release bearings feature race-proven Tilton reliability for the street. These hydraulic release bearings have been designed for ease of installation and maximum reliability, at a very competitive price. 6100-Series hydraulic release bearings are designed to mount onto the transmission input shaft bearing retainer, and are compatible with a variety of transmission types.
( 49 )
$505.75
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.
( 137 )
$560.99
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$822.99
Using the latest technology, J.W. Performance has come up with these Ultra-Bell bellhousings. Built rugged and certified, these flexplate shields allow for special motor and transmission combinations to be easily mated together. Manufactured from one-piece cast aluminum, these Ultra-Bells are five times stronger than stock bellhousings, which makes them capable of withstanding even the most severe tire shake and can fit under most stock floorboards. Order the Ultra-Bell bellhousing designed to fit your application.
( 79 )
$548.75
TCI Maximizer high-torque towing converters are efficient units that put more of your engine's torque to the ground. Slippage is minimized, providing better gas mileage and as much as a 20-degree F reduction in transmission temperature. Another benefit is reduced engine rpm at highway speed. These torque converters are available in a variety of size options for more than a dozen Chevy, Ford, and Mopar transmission models.
( 20 )
$855.95
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