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

Differential spacer details

This 24mm D-shape differential spacer is an RC hop-up made to fit the TRF 416 differential assembly. It gives a defined D-shaped contact surface that sits between diff components and lets you alter internal spacing without swapping gears or bearings.

Fitment is straightforward for anyone familiar with diff work: open the diff housing, place the D-shape spacer into the original spacer position or onto the diff shaft, then reassemble while checking for free, smooth rotation and correct gear mesh. Do not force parts; confirm clearance by turning the diff by hand before final tightening.

As a tuning item the spacer changes internal clearance and lateral positioning of diff parts, which can modify torque transfer and drivetrain feel under load. Make incremental adjustments and test on a consistent surface to assess handling changes.