This product is a complete ball bearing set designed for 1/18 scale 1RC vehicles, replacing factory bushings to improve overall drivetrain efficiency and performance. It reduces friction throughout the drivetrain, allowing for smoother operation, faster acceleration, and longer run times. The precision steel bearings are built for durability and consistent performance under racing conditions. It is considered a key upgrade for maximizing speed and efficiency in 1RC platforms. This product is suitable for both performance upgrades and full rebuilds.