Slipper ClutchCaracteristicas: Unique, patented slipper clutch delivers better performance, handling, riding comfort and safety Power Torque feature of the APTC slipper clutch prevents rear wheel hopping when downshifting Acts as a form of traction control when throttle is opened and helps rider to open throttle faster out of turns Features two hubs, connected by a helix profile that delivers a featherlight clutch pull (a reduction of up to 50% clutch spring load)