This product is a replacement transmission pinion component designed for the Losi Micro-B platform. It is a key drivetrain gear that transfers power from the motor to the transmission system, helping deliver smooth and efficient power flow throughout the vehicle. The precision-machined gear design ensures consistent mesh with mating gears for reliable performance during both racing and practice driving. Built from durable materials, it is engineered to handle the high RPM demands of small-scale RC performance. Ideal for replacing worn or damaged pinion gears and restoring proper drivetrain function.