Manual Slave Cylinder. The Rekluse Manual Slave Cylinder is a direct bolt-on O.E. replacement product designed to improve the hydraulic systems durability and increase the riders connection to the engine. Developed in partnership with elite racers and teams, it has been proven in the toughest riding environments and at the highest levels of racing. Hard anodized billet aluminum housing and piston. Race proven, durable piston and seal design. Improved clutch modulation. Direct bolt-on O.E. replacement. Designed for use with O.E. or aftermarket manual clutch systems. Complements Core Manual TorqDrive, Core Manual, and TorqDrive Clutch Pack (all sold separately). Note: NOT compatible with auto clutches (RadiusCX, Core EXP 3.0, RadiusX).