This Schumacher Racing Products factory replacement 57-tooth spur gear is designed for the 2-speed transmission system on compatible Schumacher 1:10 vehicles. It is a 48-pitch gear, making tooth count and pitch critical to verify before ordering to ensure proper mesh with your pinion. The lightened spoke-pattern construction reduces rotating mass without sacrificing structural integrity. Features: 57-tooth count 48 pitch 2-speed transmission application Lightened spoke-pattern design 7/7/26 cs