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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Powertrax Lock-Right Lockers

Powertrax Lock-Right and performance lockers' straight-line performance is equal to a solid spool axle, yet they automatically unlock to allow for full differentiation in turns. They also reduce the excessive noise, tire wear, and drivetrain damage associated with other lockers. Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.

4.3 out of 5 stars ( 148 )

$605.99

Sierra Marine Engine Couplers

Sierra Marine engine couplers are available in a variety of applications to drive your vessel efficiently. Offered individually and in kits, their couplers are manufactured from quality materials to provide hours and hours of time on the water. When it's time to replace a worn coupler, choose from the selection at Sierra Marine.

4.0 out of 5 stars ( 4 )

$379.99

Yukon Gear & Axle Ring and Pinion Sets

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.

4.43 out of 5 stars ( 174 )

$375.99

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$569.99

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.

4.56 out of 5 stars ( 9 )

$3,653.99

TCI Breakaway Torque Converters

These TCI Breakaway torque converters will give you about 1,000 more rpm stall speed than stock, so you'll launch and accelerate faster. TCI remanufactures them to last with furnace-brazed fins, needle bearings, and a flame-hardened hub--the same qualities that they gave their street/strip converter.

4.09 out of 5 stars ( 111 )

$580.95

Powertrax Cross Shaft Pins

Powertrax cross shaft pins are quality components for your Lock Right differential. These hardened steel pins are specifically designed for use with your Powertrax Lock Right locker.

3.67 out of 5 stars ( 3 )

$25.99

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