Primary Drive Rear Aluminum Sprocket 38 Tooth Black for Yamaha YFZ 450 20122013

Primary Drive rear aluminum sprockets are made from a highstrength aircraft grade aluminum alloy. Anodized and heat treated for extended wear. Self cleaning grooves prevent mud build up to prolong sprocket and chain life. CNC machined to match original equipment exactly for a perfect fit. 7075 T6 Anodized Aluminum.