This 46-tooth Mod1 spur gear is specifically designed for the center differential of Kyosho 1/8 scale off-road buggies, such as the Inferno MP9 and MP10 series. Crafted from durable, high-quality composite plastic, it offers a lightweight alternative to metal gears, reducing rotational mass for improved acceleration and drivetrain efficiency. Its primary function is to transmit power from the engine or motor to the front and rear differentials, while also acting as a crucial, replaceable component that can protect more expensive internal differential parts during extreme impacts or overloads.