Quick Change Differential Gear Set for 8500 Series Drivetrain, 1.353 Spur Ratio, 10 Spline, Includes 4.12 Ratios and 5.57 to 3.05, 4.86 Ratios and 6.57 to 3.59, Beefed Up Steel, Each

Beefed-Up Quick Change Differential Gear Set for 8500-series
✔️ 1.353 spur, 10-spline; includes 4.12 and 4.86 with 5.57/3.05

This quick-change differential gear set is designed for 8500-series drivetrains, offering rapid gear-ratio swaps to optimize performance on RC cars and model vehicles.

✅ 8500-series compatibility for rapid gear changes
✅ 1.353:1 spur ratio for quick acceleration
✅ 10-spline input shaft for robust coupling
✅ Includes 4.12 ratio pair (5.57/3.05) and 4.86 ratio pair (6.57/3.59)
✅ Beefed-up steel construction for durability

💡 What is a quick-change differential gear set used for in 8500-series drivetrains?

These gear sets let you swap gear ratios on the fly to tune performance for different loads and speeds.

- Handy for dialing in torque for hills or sprint runs
- Lets you match gearing to track conditions without swapping entire assemblies
- Built with beefed-up steel for longer life in high-torque applications
- Works with standard 8500-series components for easier upgrades