Ko Propo 45524 Ultimate Booster 2 Kato Control System A general-purpose belt tensioner with

A general-purpose belt tensioner with two bearings press-fitted into the pulley

In this special set

--Reproduce the LP405 type secondary light (not lit) mounted on the side of the headlight

For Plastic Model

Ko Propo 45524 Ultimate Booster 2 Kato Control System A general-purpose belt tensioner withThis is for Brushed motors. This is using with installing the motors. Ultimate Booster 2 is stops noise from the motor. It improves the efficiency of the motor. This is useful than shot key diode. Capacitor is useful for the startup. Booster and Shot Key Diode are useful for the top speed. Please use combination items by your selection. *Can not use with Brushless motors.