TRF 416 24mm D-shape Differential Spacer for tuning - 416-10A by 3Racing  [416-10A]

Spacer purpose and fit

This 24mm D-shape differential spacer is an aftermarket hop-up intended for use with the TRF 416 differential assembly. The shaped spacer sits between diff elements to change internal clearance while leaving gears and bearings unchanged.

Installation is simple for experienced builders: remove the diff case, place the D-shape spacer where the original spacer sits or on the diff shaft, then close the housing and check for smooth free rotation and correct engagement. Do not squeeze components together; verify by rotating the assembly manually before final fastenings.

For setup work the spacer alters lateral positioning of internal parts and can influence how the diff distributes drive under load. Use it as part of step-by-step tuning and evaluate changes on the same track surface to understand handling differences.