Each cam chain is made from premium materials for reduced friction and increased service life and are expert engineered to exceed OEM specifications and tolerances. 'M' style chains offer maximum strength and durability. Features precision solid bushings and shot peened parts. Perfect complement to the Wiseco camshafts. Fits: Honda CRF450R 2002-2008, CRF450X 2005-2009, TRX450R 2006-2009.