What a piece of junk!!!!!!!!! It lasted less then a year in race conditions. 1200 miles. I know there are riders out there that like it for trail riding and I have said, 'it works for that" so before the few of you flame on me that use it for that, I want to say for racing it sucks!!!!!!!!! Two bikes the CRF250 (bored) and 680cc XR650r with cam have had nothing but, trouble. The XR650R Finlay busted off the tabs of the clutch basket. I talked to Al Youngworth many times and he seems like a very nice guy. I called within the 30 day to return it but, he talked me into keeping it and he would send my a newer model to try that disengages the pressure plate like a real clutch. He didn't and I called many times. I never got a newer better nothing. In the end I had a clutch basket get destroyed and it is defiantly caused by the Rekluse clutch. It applies the pressure mostly at the top of the basket and not evenly over all the disks. I am not happy with the out come and think that I was right in trying to return this clutch for what I was going to apply if for. So, in the end, if you are going to race your bike or put it through it full potential Don't use this Clutch!