This Tamiya 54277 M-Chassis Reinforced Gear Set is designed for use in R/C electric vehicles. It is a tuning part for M06, M05 and M05RA chassis. This set includes two pinion gears. Tamiya offers a wide selection of wheels, tyres, motors, body shells, and many other spares and parts for Tamiya Radio Control vehicles. Compatible with M03/M04/M05/M05Ra/M06/FF02 chassis.