TT01/TT02 High-Precision Graphite Main Shaft GTT2B025 by GPM  [GTT2B025]

Precision graphite main shaft for Tamiya drivetrains

This single-piece graphite main shaft features machined alloy end fittings and is intended for installations using the TT01 shaft profile, with documented compatibility for TT02 and TT02B. The central graphite section lowers torsional compliance while the alloy terminations provide positive mechanical engagement with mating outdrives.

Replacement requires access to the gearbox or central transmission; when the stock seating and retention method match this part it installs as a direct swap. During assembly check axial seating, measure runout and re-establish wheel and spur mesh tolerances to maintain drivetrain alignment.

Designed for hobbyists seeking measurable reductions in shaft twist, the graphite core reduces flex against all-plastic alternatives while alloy ends ensure robust coupling. Inspect mating components regularly and confirm fitment before prolonged or high-load operation.