I have just pulled my entire clutch basket assembly for an inspection, and to repair my badly worn outer clutch basket. I have put approx. 15-20 HARD MX track hours on this clutch so far and have not noticed any extensive wear. I'm sorry that I wasn't able to put a caliper to the friction plate to give a factual statement. My only gripe is the price. For some reason clutch plate prices have gone up, and it's quite disappointing, especially since I see few or no other clutch choices for my 2006 CFR250R on this site at the current time.