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

Upgraded graphite shaft for F103RM

This graphite main shaft is produced for the Tamiya F103RM chassis and carries the part number F103RM-02. The graphite construction offers greater stiffness than the original plastic shaft, targeting racers and tuners aiming to refine driveline behaviour on 1/10 on-road models.

The shaft serves as the central torsional member of the driveline and directly influences how rapidly the chassis reacts to inputs by limiting torsional compliance between front and rear assemblies. Using a stiffer shaft can reduce mid-corner roll and help the car hold a tighter line when paired with suspension and mass distribution adjustments.

Installation is simple for those used to F103 series work: remove the kit shaft following the manual, check bearings and spacers for wear, slide the graphite shaft into the drive stack and reassemble with the kit hardware, ensuring correct alignment. Verify driveline play and rotate the wheels to confirm smooth operation before driving.