Who cares. All I need it to do is hold the amount of power that I am aiming for and this will do the job. ← yer definatley do the job, youngys has 410 rwkw's and it hold fine so that's not an issue, I wasnt giving you a hard time either mate, aron was talking to me about clutches on monday or tuesday and I told him I use the xtreme ones and just said that they can shudder on hills ect. if that doesnt bother you you your set ← Yes that's right - mine is the same.. holds GREAT.. but can be a bit of a pig to take off on when starting uphill. It's not a huge problem.. its just something that is part and parcel of using a non-organic clutch plate. A bit of practice and it can be worked around Cheers, Ross