This alloy main shaft is supplied as 1 pcs and is intended as an RC-scale drivetrain spare for Tamiya TT02 and TT02B vehicles. It replaces damaged or worn shafts to restore reliable driveline function during routine maintenance or tuning sessions.
Installed in the centre transmission assembly, the shaft carries torque from the motor and spur gear to the downstream gear train; during assembly confirm correct shaft orientation, inspect bearings for wear, and set endplay to prevent binding under load. Use the original mounting hardware and retainers rather than substituting unspecified parts.
Fitting a straight replacement shaft improves concentricity and reduces driveline vibration, which helps deliver smoother power transfer and longer life for spur gears and bearings. This part is an aftermarket spare or upgrade and does not affect chassis alignment or suspension geometry.
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