Motor State Distributing has set the pace for high-performance automotive components for racing, street, and off-road use. Features: No. 18A Quick Change Gear Set. Allows freer movement of parts with less surface resistance. Improves gear meshing accuracy, resulting in maximum efficiency. Extends part life and reduces the risk of part failure during operation. Increases power density, allowing for larger engines or smaller transmissions. Reduces maintenance expenses and fuel costs. Increases power output, resulting in higher speeds.