Ensure smooth and reliable power transfer with these inner drive cups designed for durability and precise drivetrain operation. Made from hardened steel, they resist wear and provide long lasting performance under high torque and rough terrain conditions. The precision construction ensures a secure fit and consistent rotation for optimal vehicle handling. Compatible with Traxxas Slash 4X4, Traxxas Rustler 4X4, and Traxxas Stampede 4X4 models.