F103RM-03 Rear Axle Offset Spacer for Tamiya F103RM - precision tuning part by 3Racing  [F103RM-03]

Technical overview

The F103RM-03 offset spacer provides incremental vertical adjustment of the rear axle mounting plane on the Tamiya F103RM chassis. Intended as a fine tuning component, it enables precise changes to rear track and toe without altering primary suspension geometry.

Functional notes: by modifying the axle mount height the spacer influences load distribution across the rear tyres, which affects rotation, mid-corner balance and exit traction. It is aimed at competitors and setup-focused hobbyists seeking repeatable geometry changes at the axle level.

Service and fitment: the component integrates into the existing rear axle spacer stack, replacing or stacking with factory pieces. Use standard touring car maintenance tools, validate axle preload and wheel alignment after installation, and confirm there is no interference with bodywork or suspension travel.

Employ the F103RM-03 as a measured tuning step when refining rear geometry; validate each setting with lap testing to quantify its effect on handling and traction.