I currently have their "stage 4" 6 puck sprung clutch and I've been using it now 4 season without any issues. Other than my TOB separating from lack of lubrication (actually, that was my bad for going ape sh!t on engine degreaser from a leaking "t-fitting" from my coolant line at the throttle body. It made it's way into the bell housing and bye bye TOB). Easy fix though...loool