Transmission Rebuild Kits

Get your transmission back to factory performance with our complete line of transmission rebuild kits. Each kit includes the essential components needed to restore reliability and smooth shifting—featuring friction clutches, steels, seals, gaskets, O-rings, and filters designed to meet or exceed OEM standards.

Our rebuild kits are available for popular automatic transmissions like the 4L60E, 4L80E, 6L80, 68RFE, 5R55, 4R70W, 10R80, and Allison 1000, with both standard and heavy-duty performance options available. Whether you’re doing a stock rebuild or building for towing, diesel, or racing applications, our kits are engineered for precision fit and lasting performance.

We stock trusted brands like Raybestos, Alto, Transtec, and Sonnax, known for their proven durability and quality. Each kit is assembled to deliver consistent hydraulic sealing, heat resistance, and friction performance, ensuring every rebuild runs stronger and longer.

Call us

shift Kits

Valve Body Correction Kits are engineered to restore hydraulic integrity and performance. Whether you're looking to maintain optimal shifting quality or achieve race-level performance, our shift kits have you covered.

Shop Now

Electrical components

BNB Electrical components are OE replacement parts. Our electrical line includes solenoids, wiring harnesses, sensors, and complete solenoid assemblies. Check out our electrical replacement parts today. 

Shop Now

heavy duty parts

BNB heavy duty parts are upgraded parts that increase the longevity of your performance build. Whether you are looking to increase towing capacity or torque, check out our HD parts collection. 

Shop Now

filters

Replacing your transmission filter is critical for prevention of damage

Click below to find the correct filter for your transmission

check out Filters

Don't forget to replace your pan gasket with transmission service

Looking to have a custom heavy duty rebuild?

Call the Gears specialists for an estimate

Call us

Have questions about parts?

Call the Gears parts experts

Call us