Traxxas TRX4 Stainless Open Shim 5.2x8.0x1.3 for TRX4010/OPSH by GPM  [TRX4010/OPSH]

Open C-shaped shim for accurate TRX4 stack spacing

This stainless open shim is produced in a 5.2x8.0x1.3 size to help with fine adjustments on TRX4 parts using the TRX4010/OPSH interface. The open profile slips over shafts and pinions so you can trial small clearance changes without stripping assemblies.

Employ these shims to eliminate slight axial play, dial in bearing preload, or tweak gearbox and axle stack height for off-road crawling. Steel construction maintains flatness and thickness under pressure better than softer alternatives, so tuning results are more repeatable.

Fitting is straightforward: wipe mating surfaces clean, slide the open shim into place, confirm rotational clearance, then rotate the driveline slowly to ensure no binding before running. Keep a record of shim positions when testing stack variations.