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.

Showing In Stock Items. Show All 319 Items.

Not Showing Customizable Items. View Customizable Items.

Individual Parts

Part Groups

Results 1 - 24 of 229

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 )

$7.99

—

$27.99

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

On Sale

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.

4.72 out of 5 stars ( 18 )

$104.95

$94.45

—

$112.95

Sonnax Clutch Backing Plates

GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to flexing and bowing of the backing plate (coning)—especially when your clutch-apply pressures exceed OE specifications. Sonnax clutch backing plates are designed to minimize flexing/bowing when the clutch is applied, drastically reducing the likelihood of clutch plate distortion. Their stiffer backing plate design outperforms OE and aftermarket plates.

5.0 out of 5 stars ( 8 )

$32.99

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

—

$9.32

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.

4.14 out of 5 stars ( 7 )

$338.34

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 )

$334.99

GearStar Ford 4R70W Level 3 Transmissions

GearStar offers level 2, 3, and 4 Ford performance transmissions, custom built by one of their master technicians from start to finish, then dyno tested with converter to the equivalent of 100 miles, ensuring the transmission and converter package is in perfect operating condition before leaving their facility. GearStar Ford 4R70W Level 3 transmissions come fully equipped with a 20,000 GVW cooler, and a variety of customizations geared towards high performance driving. "Heart-pounding performance with industry leading experience"; select the proper transmission for your build and "strap yourself in to experience uncompromising performance" with the "legendary road-proven craftsmanship" of GearStar Performance transmissions. Features and specs: * 500 hp * Up to 450 lb.-ft. of torque * 10 in. custom built billet converter with lock-up * Stall: 2,600 to 3,200 * Master overhaul kit with Alto hardened steels * Raybestos Stage I frictions * TransGo reprogramming shift kit with shift command * New electronics: -- Updated EPC -- Shift solenoids -- Lock-up solenoid -- Internal wiring harness -- Output sensors * Complete Torrington bearing kit * New bushing kit * New reverse band * Alto Red Eagle wide O.D. band * High-capacity 4-plate intermediate clutch * Direct clutch pack (eight frictions) * Rev. drum with heavy-duty mechanical diode * Updated sun shell and gear * New low spring and roller * High-capacity pump assembly * Expanded capacity overdrive servo * Updated O.D. servo pin * Updated 3rd accumulator piston * Transmission mount * Custom 360-degree adjustable shift linkage arm

Not Yet Reviewed

$7,095.00

Sonnax Clutch Hubs

Many Sonnax clutch hubs are designed for the extra-duty requirements of drag racing with Powerglide and other GM transmissions, for instance. Machined from a high-quality medium carbon steel forging, most hubs will accept five friction discs for the added load capacity needed in high horsepower race cars. All splines and thrust surfaces are precision-machined to exacting tolerances, and the unique lube hole pattern is designed to reduce drag on the friction discs in low gear. Sonnax clutch hubs are also available with or without lightening holes to reduce rotational weight.

4.63 out of 5 stars ( 16 )

$281.99

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

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 )

$176.95

—

$199.95

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

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

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 ( 344 )

$155.99

—

$509.99

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

—

$368.99

VEGE Remanufactured Automatic Transmissions

VEGE Remanufactured automatic transmissions enable you to get back on the road quickly—without breaking the bank! With its advanced and efficient production process, backed by more than eight decades of experience, VEGE is able to supply remanufactured automatic transmissions with a level of quality that equals that of new OEM products at extremely competitive prices. The parts are carefully inspected, cleaned, and then fully machined and assembled with top-of-the-line components. Thousands of models are available, with aluminum case, torque converter included, and gear options from one through eight. Includes fluid. Get your vehicle shifting into gear with a reman auto-trans from VEGE.

4.5 out of 5 stars ( 10 )

$2,295.99

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 ( 114 )

$59.99

—

$171.99

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.

4.45 out of 5 stars ( 285 )

$300.00

—

$908.99

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

—

$308.99

Lokar Cable Operated Automatic Transmission Shifters

When you order a Lokar cable-operated automatic transmission shifter, you know you're buying quality. They're manufactured to deliver outstanding performance and safety with their patented Safety Lock-Out button. This button prevents accidental shifting from park into reverse, drive, and low gears. Other important features include: a neutral safety switch; 360 degree lever rotation for extra leg room; a completely adjustable mounting bracket that allows for a wide range of installation positions; and your choice of a brushed aluminum mushroom, black anodized mushroom, or high-tech tapered shift knob. These Lokar shifters use a short shifter cable, eliminating the problem of time-consuming linkage adjustments. Available for many different types of automatic transmissions, the shifters are perfect for your car, truck, hot rod, or street rod. Options include stick length, type, and finish; and knob style, material, and finish.

4.74 out of 5 stars ( 23 )

$565.95

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

Clearance

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 )

$273.99

$54.99

—

$229.99

Page 1 of 10
Next