Put a long hard trail ride on a 570 with the new Revloc Dyna Ring today and it was flawless. Everything as promised. I never thought I would like an auto clutch but I will never go back to stock. This clutch makes tough trails way easier. If ridden right I can see a distinct advantage for racing. Continuous traction that will launch a bike out of every corner consistantly. Also they are very affordable. JMHO I am a dealer for revloc and will sell the dyna ring for $369 with no shipping cost. call me at (406)799-8836 or (406)799-7669. Feel free to call me at anytime and with any question that you might have. Thank You