The new Barnett billet clutch basket for the 2011-12 CRF450R is CNC machined from the most durable billet aluminum available, hard anodized, and features our patented second generation stainless steel inserts to prevent grooving from the clutch plate tabs. These all new inserts are made from a harder and more durable stainless steel for extreme wear resistance and to ensure smooth, consistent engagement shift after shift. Precision machined oil passage windows create more oil flow to help the plates run cooler and last longer. The backing plate, grade 8 fasteners and installation instructions are all included and the center gear is already installed for easier installation. Barnett clutch baskets are available for many popular off-road motorcycles & ATV's. Made in the USA.