STM BMW S1000R Slipper Clutch  Features: slipper system - device to control the opening - Forced Lubrication System 3 Compatible disc pack: original BMW (not included) Compatible basket: original BMW (not included) Tools: pressure plate mounting tool code UTL-0030 (recommended)  Note: when choosing the primary spring keep in mind that the greater the spring tension, the greater the pressure on the disc pack and the smaller the slipping in acceleration. When choosing the secondary spring remember that the greater the spring tension, the greater the engine brake in deceleration