Performance & Replacement Transmission & Drivetrain Parts

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.

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RAM Assault Weapon 70 Series Clutch Discs

RAM Assault Weapon 70 Series clutch discs are designed for use in oval track applications. They are manufactured from patented Rametallic friction material and work only with 6.25 in. Assault Weapon clutch systems. Floater plates are sold separately and are required for installation. The RAM Assault Weapon 70 Series clutch discs use riveted-on disc pads for optimum holding power.

Not Yet Reviewed

$101.00

Spicer Drivetrain Products U-Joint Strap Kits

Make sure your U-joints stay fastened in--by installing a fresh set of Spicer Drivetrain U-joint straps! Did you know that strap kits have a press fit and should be changed every time a drivetrain is worked on? These simple hardware kits include two straps, four self-locking metric bolts, and are made to match the Spicer U-joints. They're manufactured to the same high standards for enhanced performance and extended durability you'd expect from the most reliable name in driveshaft parts. Strength and security--that's what you get with Spicer bearing strap kits.

4.59 out of 5 stars ( 29 )

$9.99

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$30.99

Hays Self-Aligning Throwout Bearings

Designed specifically for installations with clutch to transmission misalignment resulting in noise and vibration, Hays self-aligning throw-out bearings minimize these conditions. Clutch alignment can also vary due to normal wear and tear. Self-aligning bearings with their rugged performance characteristics are also a functional upgrade from standard bearings on older cars, when applicable.

4.0 out of 5 stars ( 4 )

$105.95

Hays High Performance Throwout Bearings

Hays high-performance throwout bearings are designed to withstand the high spring pressure and high-rpm conditions common to racing clutches. They're heat-treated and Blanchard-ground to ensure trueness.

4.58 out of 5 stars ( 19 )

$97.35

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$112.95

Motion Pro Armor Coat Braided Stainless Steel LW Clutch Cables

Motion Pro Armor Coat LW clutch cables give your bike an attractive look without compromising quality, while being very affordable. With a PE liner for durability and smoothness, the cables feature a longitudinally wound (LW) inner housing that resists compression under heavy loads, delivering a precise, positive, non-mushy feel for enhanced performance. They are wrapped with an attractive stainless steel weave casing for performance and attitude and assembled with premium chrome fittings. A clear Armor Coat cover protects chrome and painted surfaces. For smooth and precise clutch operation, select Motion Pro Armor Coat LW clutch cables for your motorcycle.

Not Yet Reviewed

$104.99

Energy Suspension Brake Pedal Bushings

Energy Suspension brake pedal bushings offer a quick and easy installation to fix that annoying pedal shimmy, so you can get back to fun on the trails. Manufactured with Energy's durable, proprietary Hyper-Flex polyurethane, these bushings are impervious to oils and chemicals and are designed to withstand the test of time. These brake pedal bushing's also offer a more cost-effective repair solution by just replacing the bushings, instead of the whole pedal. Eliminate vibration in your UTV's brake pedal and restore it back to OE standards with brake pedal bushings from Energy Suspension.

Not Yet Reviewed

$7.32

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$9.32

Motive Gear Ring and Pinion Sets

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.

4.44 out of 5 stars ( 284 )

$264.99

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$653.99

Motive Gear Master Ring and Pinion Installation Kits

Motive Gear master ring and pinion installation kits include everything that's in their regular differential kit—plus pinion shims, carrier shims, and ring gear bolts (where applicable). You also have the option of upgrading to higher quality bearings by adding "T" to the end of the part number on some models. Make a better choice for your ring and pinion installation with Motive Gear differential master bearing kits. Order the model designed for your vehicle application.

4.11 out of 5 stars ( 343 )

$183.99

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$509.99

Motive Gear Basic Ring and Pinion Gear Installation Kits

Motive Gear ring and pinion gear installation kits include high-quality components to complete your project. Depending on the axle application, the kits can include: a cover gasket, pinion shims, carrier shims, crush sleeve, pinion seal and nut, and ring gear bolts. Some kits also come with marking compound and a brush. To ensure proper fitment, order the installation kit designed for your specific axle model.

4.14 out of 5 stars ( 49 )

$54.99

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$229.99

Motive Gear Differential Bearing Kits

Motive Gear differential bearing kits contain everything you need to install your ring and pinion. Available for front or rear axles, the kits are offered for nearly three dozen differential case design applications. Includes: * Front and rear pinion bearing * Pinion seal * Carrier bearings * Pilot bearing (depending on application) * Gear marking compound * Crush sleeve * Pinion nut * Brush * Thread locking compound * Cover gasket or RTV

4.46 out of 5 stars ( 26 )

$174.99

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$308.99

Motive Gear Open Differential Internal Kits

Motive Gear open differential internal kits are an efficient and economical solution for rebuilding your worn-out carrier components. They're available for a wide range of axle models, and typically include replacement gears and hardware necessary to restore traction and control you depend on. Don't take a chance by reusing old gears or worn washers when performing a differential rebuild. Reduce future carrier problems and order the Motive Gear open differential internal kit designed to fit your application.

4.66 out of 5 stars ( 35 )

$804.99

Eaton Master Differential Installation Kits

Eaton master differential installation kits make upgrading your differential easier by providing all the components needed to properly setup your Eaton differential or replace your ring and pinion, all in one box. They include premium bearings and components to ensure long life and quiet operation. For a smooth installation, choose the kit with the best parts designed to deliver the best performance--Eaton master differential installation kits. Order the kit best suited for your application.

4.67 out of 5 stars ( 9 )

$288.99

Eddie Motorsports Billet Clutch Reservoirs

Eddie Motorsports billet clutch reservoirs are manufactured from 6061 T-6 aluminum, and include bracket for easy mounting on your car's firewall or other easy-to-access location. The bracket is predrilled for easier mounting, and the reservoir has a 4 oz. capacity and comes with an aluminum 5/16 in. barbed fitting. Eddie Motorsports billet clutch reservoirs are available in raw machined or bright polished finishes, as well as black or clear anodized.

2.5 out of 5 stars ( 2 )

$188.95

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$199.95

Valair Performance Heavy-Duty Clutch Hydraulic Kits

Valair heavy-duty hydraulic assemblies are master/slave cylinder replacements for your diesel rig. Depending on your year, they will include fixed rod or adjustable rod for pedal/engagement adjustment. Order the model designed for your vehicle application.

4.5 out of 5 stars ( 6 )

$355.26

Moser Engineering Replacement Alloy Axle Shafts

Moser Engineering replacement alloy axle shafts feature high-quality materials that can stand up to everyday use. They use the finest alloy for these replacement shafts, giving you a custom alloy shaft that has been induction heat-treated, 100 percent magna-fluxed, and has a hardened bearing seat for years of worry-free use. Available for passenger car, truck, and SUV applications, Moser Engineering replacement alloy axle shafts are the perfect fit for your vehicle.

4.35 out of 5 stars ( 57 )

$335.00

Summit Bucks

Sonnax Remanufactured Valve Bodies

Transmission valve bodies only last so long. When it's time for replacement, you can spend extra green and get new, or buy Sonnax remanufactured valve bodies. To eliminate separator plate cracking or cross-leaking, Sonnax adds a 2-3 accumulator support plate before remanufacturing. Each core's disassembled, cleaned, updated, tested, and parts are replaced as necessary. These direct replacement units are electronically and hydraulically tested and include lockup and shift solenoids. Save some green, while still receiving premium parts, with Sonnax Remanufactured valve bodies.

5.0 out of 5 stars ( 2 )

$343.40

Standard Motor Neutral and Backup Safety Switches

Don't take chances with old, questionable, or faulty neutral and reverse safety switches that can be a danger to you and others. Standard Motor Products replacement neutral safety switches are designed to exceed OEM specifications for dependable, accurate, maintenance-free operation. Trust your vehicle's electrical system needs to Standard Motor Performance.

3.94 out of 5 stars ( 50 )

$147.99

Summit Bucks

Sonnax Pressure Switch Rebuild Kits

Sonnax pressure switch rebuild kits can help salvage your transmission electro-hydraulic control module (TEHCM), restore normal switch operation, eliminate codes, and provide renewed shift performance in all ranges. Some GM transmissions send various trouble codes related to internal fluid pressure failures to your TEHCM. These codes may be accompanied by torque converter clutch (TCC) apply problems or shift irregularities such as slipping, flares, harsh application, and bind-ups. Often, the cause is laminated portions of unobtainable OE pressure switches breaching, preventing normal switch operation. Avoid multiple breakdowns that can trigger failsafe mode and TEHCM replacement by ordering the Sonnax pressure switch rebuild kit recommended for your GM transmission.

Not Yet Reviewed

$98.99

Classic Performance Rear Axle Conversion Kits

Classic Performance rear axle conversion kits convert your rear to a 5-lug. If you've upgraded your 6-lug truck to a 5x5 in front, then you need to do the same in the back. These kits come complete with axles and may include spider gear and drums as well. Complete your 5-lug conversion with rear axle kits from Classic Performance.

4.74 out of 5 stars ( 53 )

$288.99

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$368.99

Spicer Drivetrain Products Life Series U-Joints

Spicer Drivetrain Products Life Series U-joints consistently outperform the rest, so you can hit the road or trail with confidence. Cold-forged from high-quality steel, these SPL universal joints feature synthetic thrust washers, multi-lip seals, and the choice of greaseable or non-greaseable. Get the most out of your rig with Spicer Life Series U-joints. Order the replacement model designed to fit your vehicle.

4.83 out of 5 stars ( 113 )

$65.99

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$170.99

Summit Bucks

Sonnax Pressure Switch Rebuild Installation Tool Kits

Sonnax pressure switch rebuild kits allow you to salvage the expensive transmission electro-hydraulic control module (TEHCM). The required Sonnax installation tool kits make the rebuild quick and easy, seating the laminate discs and setting the seals in place. Contents of each kit: * Laminate installation tool * Seal installer * Piston * Seal plunger

Not Yet Reviewed

$19.99

Summit Bucks

Sonnax Hydraulic Line Pressure Booster Kits

Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together, providing progressive pressure increases as driving conditions become more demanding. Their springs are approximately 10 percent stronger than OEM and more conservative in impact than other aftermarket kit springs. Large ratio boost valves provide higher pressure incrementally and when it's needed the most. The combination of these springs and valves in the Sonnax hydraulic line pressure booster kits gives you the best of both worlds--a modest pressure increase at the low-end, with a high-end pressure that's equal to or greater than that of other aftermarket kit springs.

4.95 out of 5 stars ( 20 )

$92.03

Lokar Electronic Sport Shifters

Lokar electronic sport shifters allow you to take control of your automatic transmission whenever you desire. Just shift your lever from drive into sport mode and begin bumping through the gears. Lokar has maintained all of the safety features from their traditional units, and these sport-mode shifters are available for several applications in different shifter lever lengths and knob styles. Retain classic looks, while adding new technology with Lokar electronic sport shifters. Features include: * Positive lock-out in Park and Neutral * Neutral safety switch * Floor mount design, cable operated * Standard automatic with integrated "Sport Shift" mode * Works will all current Lokar knobs and adapters * Several lever lengths in straight or bend-styles available * Works with most aftermarket controllers * Cable-integrated bracket

4.21 out of 5 stars ( 24 )

$827.95

VEGE Remanufactured Torque Converters

VEGE has honed its remanufactured torque converter operation to optimize a steady outflow of a variety of products by using and adopting standard operating procedures to supply automotive, high-performance, heavy-duty, and industrial converters. VEGE torque converters incorporate the necessary upgrades to reduce failures. Areas that are known to fail such as pump and turbine blades are reset and re-enforced. The stators are completely disassembled and reloaded with new rollers and springs. Turbine hubs that have a high failure rate are replaced with billet steel hubs. Needle bearings are replaced with new ones and in most cases upgraded to heavy duty standards. VEGE torque converters are super balanced twice! Using state of the art Hines balancers all VEGE torque converters are checked for balance during the set up and tack and after final weld. This makes for a better dynamic running torque converter.

4.04 out of 5 stars ( 54 )

$108.99

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$228.99

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