Description
Product Overview
The Motive Gear R10RMKT Differential Bearing Kit is engineered for both front and rear GM 8.5 differentials. Constructed with a precision‑machined exterior, the kit includes Timken tapered bearings for the carrier, front and rear pinion, and pilot where applicable. Additional components such as a brush, cover gasket (or RTV), crush sleeve (or preload shim pack), and marking tools ensure a comprehensive installation. Weighing 5.82 pounds and measuring 11 x 12 x 1.75 inches, the kit balances robust durability with manageable size for easy handling.
Usage
Designed for performance‑oriented drivers and everyday commuters, this kit excels in demanding environments—from daily city traffic to track‑day racing. It fits GM 8.5 front or rear differentials, making it versatile for a range of vehicle models. Installation is straightforward for seasoned mechanics, while the included marking components aid less‑experienced users in achieving precise alignment. 
Why Choose Us
Motive Gear is a trusted name in automotive differential components, known for rigorous quality control and engineering excellence. Each bearing is sourced from Timken, ensuring industry‑leading durability and load capacity. The machined housing provides superior fit and finish, reducing the risk of premature wear. Our kits are tested to handle the toughest shock loads encountered in racing applications, delivering consistent performance over the lifespan of the vehicle.
Key Features
- Includes Timken tapered bearings for carrier, pinion, and pilot
- Machined exterior housing for precise fit and reduced vibration
- Complete set with brush, gasket, crush sleeve, and marking tools
- Designed for front or rear GM 8.5 differentials
- Engineered to withstand high shock loads in racing conditions
FAQ
Is this kit compatible with both front and rear differentials?
Yes, the R10RMKT kit is specifically designed for front or rear GM 8.5 differentials, providing the same high‑quality components for either application.
Do I need additional tools to install the kit?
The kit includes marking tools and a crush sleeve (or preload shim pack) to aid installation, but standard mechanic tools such as a torque wrench and socket set are required.
What is the warranty on Motive Gear bearing kits?
Motive Gear offers a limited warranty covering manufacturing defects for a period of one year from the date of purchase.
Can this kit be used in racing applications?
Absolutely. The components are engineered to handle the high shock loads typical of racing, making it a reliable choice for performance builds.
How does the machined exterior improve performance?
The machined housing ensures a tighter tolerance fit, reducing play and vibration, which translates to smoother gear operation and longer component life.




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