Tamiya TT01 Alloy Main Shaft by GPM TT025  [TT025]

Alloy main shaft for TT01

This alloy main shaft is an RC-scale replacement part intended for use in Tamiya TT01 chassis builds and repairs. It functions as a direct-drive shaft within the car's drivetrain and is aimed at reducing play under load compared with standard stock shafts.

Fitment and installation require basic drivetrain disassembly to remove the original main shaft and to inspect surrounding bearings and gears for wear. Check spline alignment and bearing seating before final assembly to avoid premature wear. Use proper thread locking and torque values on any retained fasteners according to your TT01 manual; the shaft itself mounts where the factory part is located and does not change mounting geometry.

In tuning terms, an alloy main shaft can influence drivetrain stiffness and feedback to the motor and spur gear engagement. Swap decisions should be based on observed play or flex in the stock shaft, and verified with test runs to confirm desired handling and gear meshing under different loads.