Kyosho MBW031 Aluminum Motor Holder Set features good heat radiation and high rigidity, firmly holding the motor to the chassis, ensuring a smooth gear mesh without getting affected by the motor's heat. It is easy to install and maintain, allowing you to replace the motor holder, pinion gear, and spur gear quickly and efficiently. You can adjust the acceleration and maximum speed by changing the pinion and spur gears, giving you more control over your buggy's performance.