In my opinion, the stock clutches work just fine. Mines lasted through one hell of a beating, and its still over 50% (I'm looking at it - moters out). Especially on rocks where you want to slip the cluch a little. For the 22's, centerforces are waaay to grabby. I have a freind with a stage II behind her 22R, and its painful. Plus, its easy to replace clutch... only 3-6hours depending on your experience.

just my opinion,

Scerb