GM Open 8.6 Rear 30 Spline Spider Gears

The GM Open 8.6 Rear 30 Spline Spider Gears from MOTIVE GEAR is a complete differential spider gear kit engineered for General Motors 10-bolt rear axle assemblies. This component is essential for vehicle owners and technicians who need to rebuild, repair, or upgrade their differential drivetrain. Spider gears are critical load-bearing components that manage torque distribution between drive wheels, making proper selection and installation vital for vehicle safety and performance.

Constructed to factory specifications, this open differential kit includes all necessary hardware components: spider gears, washers, and the pinion shaft assembly. The 30-spline design ensures precise mesh engagement with the GM 10-bolt carrier, while the open configuration allows independent wheel rotation for improved cornering dynamics. The kit's material composition is designed to withstand continuous load cycles typical of street and light-duty applications, with tight manufacturing tolerances that prevent excessive backlash and ensure smooth power transfer.

This spider gear assembly is ideal for restoration projects, differential overhauls, and maintenance on classic and modern GM vehicles equipped with 8.6-inch rear axles. Installation requires proper differential carrier disassembly and adherence to factory torque specifications; professional service is recommended to ensure correct preload and gear mesh. The complete kit format simplifies ordering for rebuilders and service shops, eliminating the need to source individual components separately.