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 848 Items.

Not Showing Customizable Items. View Customizable Items.

Individual Parts

Part Groups

Results 1 - 24 of 608

Spidertrax Off-Road Front Axle Stubs

Spidertrax Off-Road's all-new 1480 40 spline front axle stubs are a reinvention of their already proven 35 spline stub shafts. Manufactured from billet 300M aerospace material with an integrated positive locking design—all while achieving 50 degrees of steering—they're the next best thing in stub shaft technology… and the last stub shafts you'll ever need. These 1480 40 spline stub shafts are designed to work with 60 style U-joints and Spidertrax 40 spline Ultimate Unit Bearings. * Aerospace Quality: Spidertrax follows the strictest AMS Aerospace standards for their heat treatment, complete with double tempering, snap tempering, and cryogenic treatment procedures. Parts are sampled to ensure proper grain structure is achieved up to 0.0003 in. from the surface; that's a depth 1/10 the thickness of a human hair! In summary, you're getting the best material and the best heat treatment on the market. * Locked: Turning 40 degrees is impressive, but Spidertrax axle shafts can turn 50 degrees. Engineers achieved this by positively locking the shaft to the Ultimate Unit Bearing with a billet aluminum cap and cap screw. Keeping that stub shaft tightly secured not only helps with driveline vibration, but helps with overall strength of shaft and U-joint. * 40 Splined: Each stub shaft is 40 splined—a size that makes perfect sense, especially when running properly paired inner axle shafts. When sized with the same shaft diameter as inner shafts, stub shafts end up taking the full punishment in your front-end. The stub shaft should be "stronger" than an inner axle because unlike an inner axle, stub shafts have little room to twist, making them more prone to failure. An added bonus: with many drivers running 40 splined rear Ultimate Unit Bearings, having the same unit bearing up front makes for better serviceability and part simplicity.

Not Yet Reviewed

$1,299.00

On Sale

RevMax Custom Coated Transmission Pump Plates

The RevMax custom coated transmission pump plates are a must-have part on any 68RFE rebuild. The factory plate is typically found to have excessive grooving in it and should always be replaced during an overhaul. These custom laser-cut steel alloy plates are heat-treated to insure flatness and hardness and are then finished with RevMax's proprietary friction reducing and self-lubricating electrostatically applied coating. This special coating reduces pump wear from the pump gears by decreasing surface friction and increasing lubrication during dry startups. These plates will work with all factory pumps regardless of manufacture date and with aftermarket pumps.

5.0 out of 5 stars ( 2 )

$99.00

$89.10

RAM Truck Pulling Custom Order Clutch Kits

RAM truck pulling clutch kits are custom-assembled for your specific application. These units feature a heavy-gauge steel cover with welded spring guides and a steel pressure ring. Flywheels are available in 30 or 40 lb. weights, as well as in billet aluminum. The clutches can be set up with either 5135 or 5191 compound iron discs with 1 to 10 splines. Single disc slipper-style clutches can be used with engines producing up to 800 hp, or where very limited slipping is desired. These clutches utilize the same quality components as the RAM dual disc pulling clutches. These units can be assembled with your choice of sintered iron disc materials and flywheel weights. Dual disc clutches will allow a more controlled slip as the vehicle comes out, without severe wear or every-round maintenance. Dual disc clutches are built to fit different stock depths or deep bellhousings.

3.0 out of 5 stars ( 2 )

$1,849.99

—

$2,299.99

Trail-Gear Rock Assault Custom Axle Housings

Years after releasing their successful Rock Assault 9 axle housing, Trail-Gear decided to add a Toyota 8 in. version to the Rock Assault lineup. This housing is built to the same specifications as the Rock Assault 9 axles; however, they're built to accept the popular Toyota 8 in. differential. These housings have been tested in W.E. Rock, CalRocs, and King of the Hammers—so you know they'll stand up to the toughest terrain on earth. Trail-Gear started with a 1/4 in. thick formed shell for the center section made from A36 steel. This is a high-strength, low alloy, structural steel plate with a minimum yield strength of 36,000 psi. All of this is attached to an equally strong 1/2 in. thick faceplate for anchoring the DOM axle tubes. The axle tubes are secured by the industry's first 3-Point Attachment System, giving the tubes superior support and engagement into the center section. Trail-Gear also faces the center section to ensure your differential mounts flush against the axle housing to prevent any leaks. Rock Assault Fabricated 8 Housings are offered with 3.5 in. O.D. axle tubes with your choice of 1/4 in. or 3/8 in. wall thickness. NOTE: The housing is shipped with no ends. Housing ends must be sourced and installed to complete axle. Portal style ends are commonly used for this application.

Not Yet Reviewed

$1,199.99

Advance Adapters Pilot Bushings

For customized vehicles, Advance Adapters pilot bushings help adapt engines to transmissions. Most of them feature a special bronze Oilite material with pores that allow the oil to permeate throughout the bushing—keeping everything properly lubricated. Some of the many styles include: * Solid bronze bushings * Crankshaft bushing spacers * Bushing extenders

4.9 out of 5 stars ( 10 )

$9.50

—

$30.80

TransGo Automatic Transmission Shift Valves

These TransGo automatic transmission shift valves will provide maximum throttle between the 3-4 gear shift. During highway speeds, the TransGo automatic transmission shift valves will keep the transmission in 4th gear, so there are no downshifts while at cruising speeds.

4.17 out of 5 stars ( 6 )

$64.29

Advance Adapters Pilot Bearings

For customized vehicles, Advance Adapters pilot bearings help adapt engines to transmissions. Their all steel roller bearing design offers the lowest friction option.

3.8 out of 5 stars ( 5 )

$21.27

—

$28.39

Summit Racing™ Pro LS Transmission Adapters

Summit Racing's Pro LS transmission adapters enable you to swap to more common and inexpensive manual transmissions from other vehicles. In addition to the bellhousing adapter, they often include handy items like the billet steel flywheel, fasteners, pilot adapter, and starter mounts. These adapters allow the use of the high performance clutches commonly used with the transmission. The kits are available for 5-speed or 6-speed applications.

5.0 out of 5 stars ( 1 )

$949.99

—

$1,266.99

FTI Performance SST Series Torque Converters

FTI Performance SST Series custom-order torque converters are available for use with a variety of transmissions, including Powerglide, THM350, and THM400. The 9 in. units are used by top drag racers. A torque converter is what transmits torque from the engine to a rotating driven load. It's a type of fluid coupling which allows the engine to spin somewhat independently of the transmission. SST Series torque converters are available with a 0-blade stator for a turbo spline, or the looser 6T stator model.

Not Yet Reviewed

$1,149.00

TCI Competition Torque Converters

TCI Competition torque converters are proven race winners and an excellent choice for stock and Super Stock cars. They work well with both big and small blocks, producing power between 4,500 and 7,000 rpm. You'll maintain engine rpm between shifts with their efficient design, and gain improved reliability with an oversize caged bearing supporting a new stator. ETs are more consistent and reaction times faster as a result of a stronger housing, which resists flexing and ballooning.

4.11 out of 5 stars ( 9 )

$985.95

—

$1,645.95

Hughes Performance Street and Strip Transmissions

Hughes Performance Street and Strip transmissions are made tough enough to deliver tire-spinning shifts race after race. They include internal and external racing components, which increase strength, reliability, and torque capacity. Plus, they feature Hughes' manual/automatic valve body to provide precise manual or fully automatic shifting. Choose the transmission type best suited for your vehicle.

3.87 out of 5 stars ( 30 )

$1,917.99

—

$2,965.99

Rekluse Clutch Radius CX Clutch Kits

Rekluse Clutch Radius CX clutch kits are the next evolution in auto clutch technology. They bring together all of Rekluse's latest technology into one package. TorqDrive friction disk technology coupled with EXP and their Core technology results in a significant advancement of performance with exceptional hook-up, lever feel, and durability. Just when you thought auto couldn't get better, RadiusCX has raised the bar. Features and benefits include: * Better starts, carry more speed, focus on the line and not on the clutch * Perfect power delivery every time * Maintain momentum; use the torque of your motor without worrying about stalling * Increased power transfer over OEM * Fully tunable to suit rider and/or terrain * Optimized pressure plate design provides our best lever feel; consistent control and behavior * Core components deliver improved oil flow and stability over wide temperature ranges * TorqDrive friction disks provide longer clutch life with less adjustment over time * Rekluse sleeves eliminate basket wear and notching

Not Yet Reviewed

$874.77

Dorman Pinion Yokes

Dorman pinion yokes are direct replacements for a proper fit and trouble-free performance. Engineered from cast iron for long-lasting durability, their driveshaft pinion yokes include high-quality seals constructed from a combination of rubber, metal, and plastic to prevent lubricant from leaking. These quality Dorman pinion yokes deliver no-hassle installation with headache-free operation.

4.43 out of 5 stars ( 7 )

$112.95

—

$216.99

Rekluse Clutch Core Manual TorqDrive Clutch Kits

Rekluse Clutch Core Manual TorqDrive clutch kits allow more friction disks to fit the clutch, delivering smoother lever function, less clutch fade, and a more linear power delivery. In addition, the billet center hub and pressure plate work together to move more oil through the clutch, reducing drag and decreasing operating temperatures. The TorqDrive technology features thin friction disks and protective basket sleeves, while the Core technology optimizes oil flow, helping your clutch last longer, and reduces temperatures to maintain consistent performance even in extreme conditions. Join the clutch revolution with the Rekluse Clutch Core Manual TorqDrive clutch kit best suited for your application. Other product features and benefits include: * Reduced (10 percent) clutch lever pull strength for less hand fatigue * Expanded friction zone for increased control and smoother take-offs * Increase (20 percent) in torque capacity for reduced wear, reduced heat, and increased power transfer capability * Billet internal components provide enhanced durability and increased oil flow

Not Yet Reviewed

$909.00

TCI PRO-X Torque Converters

These TCI PRO-X torque converters are designed specifically for Top Sportsman, Top Dragster, and Outlaw Street Car classes. Able to handle 2,500+ hp applications (including multi-stage, nitrous-assisted, supercharged, and twin turbocharged engines), these high-strength torque converters feature a TCI exclusive--HDT (Heat Dissipating Technology) Coating--further enhancing their ability to deliver unsurpassed consistency and durability. Features include: * Hand-built steel stator * Forged mounting cover * 3 sets of heavy-duty internal bearings * Furnace-brazed turbine and pump assembly * Built for GM, Ford, and Chrysler transmissions * 4 or 6-bolt flanges and optional billet front available

Not Yet Reviewed

$1,815.95

HardDrive Full Spoke Billet Pulleys

HardDrive offers full spoke billet pulleys for a variety of applications, including many Harley-Davidson© street bikes from 1984 and up. The full spoke rear drive pulleys are designed to match the stylish HardDrive 48-Fat Spoke wheels. They're CNC-machined from 6061 billet aluminum and are available in chrome or powdercoated gloss black. These direct bolt-on pulleys fit most OEM and aftermarket wheels. Not cush-drive applicable.

Not Yet Reviewed

$260.06

American Powertrain Science Friction Flywheels

American Powertrain's Science Friction flywheels are available for most GM, Ford, Mopar, and AMC V8 engines. Their high-performance billet steel or lightened billet steel flywheels work best on the street for smooth performance—and for drag racing where the flywheel stores energy for hard launches. Billet aluminum flywheels are preferred for high-revving engines and in road racing where rapid rpm gain is essential. More than 50 models and configurations are available; order the flywheel recommended for your engine application. Features include: * High-grade billet steel or aluminum * Heavy-duty ring gears (with welded tabs on aluminum flywheels) * SFI certification is available on every flywheel * 20 percent lightening is available on steel flywheels * Double Blanchard-ground steel friction plates on aluminum flywheels * Aluminum flywheels have aircraft-grade riveted friction plates

4.31 out of 5 stars ( 13 )

$349.95

Summit Racing™ Torque Converters

Designed for stock and mildly hopped-up street vehicles, our Summit Racing™ torque converters give you the extra stall speed that you need for quicker launches. They're available for a variety of transmission makes and models. Summit Racing™ converters are computer-balanced and feature: * Submerged arc welds * New turbine hub * Custom stator * New pilot * New impeller hub

3.92 out of 5 stars ( 372 )

$291.99

—

$509.99

Summit Racing™ Pro LS Torque Converters

Summit Racing™ Pro LS torque converters are designed for stock and modified LS-powered street vehicles that make up to 600 rwhp. They will furnish the extra stall speed that you need for quicker launches—and they pair well with our Summit™ Pro LS series camshafts. These computer-balanced torque converters feature: woven carbon lockup clutch lining; heavy-duty Torrington bearings; hand TIG welding; a new pilot, impeller hub, and turbine hub; and a custom stator. The torque converters are available in a variety of options; order the model recommended for your application.

4.16 out of 5 stars ( 37 )

$509.99

—

$809.99

LuK Clutch TorCon Torque Converters

Replacing older OE converters can be a challenge, often compelling customers to settle for makeshift solutions. You can remedy such an issue by choosing a LuK Clutch TorCon torque converter to restore smooth shifting to your automatic transmission. LuK's selection of converters provide the correct fit and function, covering a wide range of vehicles, assuring you will be able to find the proper unit for your vehicle.

5.0 out of 5 stars ( 4 )

$349.99

—

$1,116.99

FTI Performance SRL Series Billet Lockup Torque Converters

FTI Performance SRL Series billet lockup torque converters feature a computer-designed, CNC-machined billet front cover and a billet lockup piston--making premature clutch wear a thing of the past. With custom stator designs and multiple blade angle pumps, stalls are available from 2,800-4,400 rpm. They are custom-built to your exact needs and driving style. With furnace-brazed and heli-welded fins, severe-duty sprague, and anti-ballooning flanged impeller hub, these torque converters are virtually indestructible.

4.19 out of 5 stars ( 21 )

$1,059.00

—

$1,895.00

On Sale

PRW Pro Series Flexplates

PRW offers Pro Series flexplates for a wide range of applications—raising the bar in the high performance industry. The combination of top quality and reasonable pricing sets new standards. These replacements are engineered to handle extreme-duty applications and designed to take the punishment of today's high-horsepower engines. The 4mm thick centerplate provides a solid foundation for these new designs. Ring gears are precision-welded to meet SFI specifications, utilizing robotic machinery and cold-welding process. The steel flexplates are machined for excellence and rigorously inspected throughout the manufacturing cycle to ensure that customers receive the quality they've come to expect from PRW products. Additional details: * SFI 29.1 certified * Direct bolt-on component * Forged one-piece steel ring gears * 0.035 thicker than stock flexplates * Constructed from cold-rolled premium steel * Features double-welded ring gears for added durability

4.45 out of 5 stars ( 11 )

$206.58

$75.44

—

$214.00

Hurst Competition/Plus Shifters

The industry standard for over 30 years, Hurst Competition/Plus shifters offer state-of-the-art control for popular 4-, 5-, and 6-speed manual transmissions. Dedicated applications ensure a custom fit on a wide variety of vehicles with factory consoles without any floor pan modifications. Other features include race track-proven design and reliability, adjustable gear stops to prevent over shifting and prolong transmission life, and an easy-to-follow installation guide.

4.61 out of 5 stars ( 123 )

$286.95

—

$649.95

Hurst Competition/Plus Installation Kits

Hurst Competition/Plus shifters have been the benchmark of transmission control and race-proven since 1963. When you are ready to install one, be sure to choose the correct kit for the right fit. Hurst Competition/Plus shifter installation kits are custom designed to fit directly into your vehicle, with the least possible modifications, and to give you firm positive shifts every time. They come with everything necessary (shifter not included) to install your Hurst Competition/Plus shifter in your car. Features: * All parts, hardware, and installation instructions * Hardened steel shift linkage rods * Nylon bushings and spring clips * Shifter mount plate

4.52 out of 5 stars ( 215 )

$299.95

—

$435.95

Page 1 of 26
Next