Wiseco CPK007 Clutch Pack Kit Fits: Honda CRF450R 2002-2008, CRF450R 6-spring 2009-2012, CRF450R 2013, CRF450X 2005-2009 Contains everything you need to upgrade your worn out clutch plates and springs, frictions, steels, and clutch springs, all made from premium grade materials The frictions and steels are made with exact OEM tolerances and specifications, and produce the same feel and wear resistance of OEM plates Wiseco clutch springs are 8-10 percent stiffer than stock to ensure a positive clutch lockup every time Clutch pack kits are an easy solution to worn or slipping clutch packs