Tamiya TT-01 Differential Upgrade Gear TT01-05/RG compatible with TT01-05/LB by 3Racing  [TT01-05/RG]

Serviceable hop-up differential for TT-01

This replacement differential gear is made for Tamiya TT-01 builds and is shown as compatible with the TT01-05/LB variant. It provides a serviceable hop-up option for hobbyists who need to replace a worn diff or want a reliable spare for trackside repairs.

Fitment and role: the component is designed to mount inside the standard TT-01 differential housing and to mesh with the original spur and pinion layout used on TT01-05/LB configurations. It restores predictable differential behaviour and correct gear engagement for tuning or routine maintenance.

Installation notes: remove the TT-01 diff cover to swap this gear, check tooth engagement and bearing alignment during reassembly, and use the vehicle's original fasteners. Run the diff by hand to confirm smooth movement before driving the car under load.