These gearbox joints are used when the TT-02 chassis is fitted with Item 53792 Assembly Universal Shaft (TT-01, TA04). Steel components help cut power loss and realize smooth motion.

Compatible Chassis:
TT-02*1, TT-02 Type-S, TT-02B*2 & TT-02D*1 Chassis

*1: Use with Item 53792 Assembly Universal Shaft (TT-01, TA04).
*2: Use with Item 53791 DF-02 Assembly Universal Shaft.