this is my reasoning- if you think about it, the weekest link in these bikes drivetrain is the clutch- and specifically the clutch basket. the plates and rear sprocket typically wear out sooner than the basket but if something was to just "snap", probly would be the basket. anytime you can strengthen the weakest link your shit will hold up better, gauranteed you wont regret the purchase of that hinson unit. oem is good also. i put my oem motor/clutch through about 30 full throttle clutch drops with a paddle tire in the sand sunday afternoon and it didnt blink an eye