Tamiya F103RM Graphite Performance Main Shaft F103RM-02 by 3Racing  [F103RM-02]

Performance graphite main shaft for F103RM

This is a graphite main shaft made for use with the Tamiya F103RM chassis, identified as part F103RM-02. The stiffer graphite material outperforms stock plastic shafts in torsional rigidity, aimed at drivers adjusting chassis balance and driveline response on 1/10 on-road cars.

The component replaces the kit main shaft and acts as the driveline spine, affecting how quickly the car responds to throttle and steering changes by cutting torsional flex between front and rear. A stiffer shaft commonly reduces mid-corner roll and tightens handling when combined with suspension and weight adjustments.

Fitting is direct for anyone familiar with F103 maintenance: remove the original shaft per the kit instructions, inspect bearings and spacers for wear, insert the graphite shaft into the drive stack and refit using the kit fasteners while keeping alignment correct. After assembly check for freeplay and rotate the wheels to ensure the driveline runs smoothly before use.