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

Technical overview of the open shim

This 5.2x8.0x1.3 stainless open shim is intended for fine axial and stack adjustments on TRX4 components that conform to the TRX4010/OPSH interface. Its open C-profile allows rapid fitting over shafts and pinion areas without full disassembly, enabling controlled incremental changes during setup.

Designed for consistent thickness and flatness under load, the steel shim is suited to correcting small axial play, establishing predictable bearing preload, and setting gearbox and axle stack heights in trail-focused assemblies. Repeatability during testing is a primary benefit of the material choice.

Fitting guidance: ensure mating surfaces are clean, insert the open shim in the intended position, confirm rotational clearance, and slowly cycle the drivetrain to verify there is no binding before full operation. Track shim positions and keep matched pairs together when evaluating different configurations.