Aftermarket Sigma slipper clutch for 06-16 Yamaha R6R. Works like Yoyodyne slipper. Huge improvement compared to stock slipper and much better than doing the stock clutch mod. Comes with box. Comes with everything shown in photo, does not come with clutch plates. I believe you use stock clutch plates. In great condition, perfect working condition, amazing upgrade. $700 shipped. Kumpy 617-257-1845