Tamiya F103/F103GT Precision 3mm Graphite Shim Plate F103GT-25/SG by 3Racing  [F103GT-25/SG]

Precision graphite shim for motor offset tuning

The F103GT-25/SG 3mm graphite shim motor mount plate is a compact spacer intended to provide controlled motor offsets on Tamiya F103 and F103GT chassis. Designed for setup work, the shim allows incremental changes in motor position without altering the factory mount geometry.

Fitting procedure is direct: insert the 3mm graphite shim between the motor casing and mount, retain original fasteners and verify gear mesh after securing. Because the shim only alters spacing, confirm clearance for wiring and gearbox components prior to final assembly.

In a tuning workflow the shim is useful for small adjustments to improve pinion-to-spur engagement and to influence front-to-rear weight distribution. Use it alongside standard checks of gear alignment and bearing preload as part of a methodical setup process.