Quick Change Gear Set 8500 Series Diff Gears And Pinions, 1.545 Spur Ratio, Set 27, 10 Spline, Steel Construction, Includes 4.12 Ratios 6.37 To 2.67 And 4.86 Ratios 7.51 To 3.15, Plain Finish, Automotive Performance Upgrade

8500 Series Quick Change Gear Set for Diff Gears
✔️ 1.545 spur, set 27, 10-spline steel; 4.12 & 4.86

This Quick Change Gear Set is designed for automotive differentials, enabling fast gear ratio changes for performance upgrades and track use. Built from steel with a plain finish for durability and long life.

✅ 8500 Series quick-change gear set
✅ 1.545 spur ratio
✅ 10-spline input
✅ Steel construction, plain finish
✅ Includes 4.12 (6.37/2.67) and 4.86 (7.51/3.15) ratios
✅ Pack: Set 27

💡 What is a quick change gear set used for?
- handy for final-drive tuning on racing diffs
- simplifies changing gear ratios without full teardown
- helps dial in acceleration and top speed for different tracks
- ideal for hobbyists testing multiple gearing options