This slipper set is supplied pre-built and ready to install in your vehicleFeatures: Precision manufactured aluminum slipper hub takes drive to the rear transmission Durable composite 55 tooth, 0.8 module spur gear for reliable power handling capability Castellated slipper pad for assured location into spur gear Built around a strong red anodized aluminum slipper shaft Molded composite nut to set the spring tension for consistent slipper setting Supplied assembled and set, ready to install into your vehicle Includes:1 x Assembled Slipper Clutch with 55 Tooth Composite Spur Gear