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: Yamaha YFM350 Warrior 1987-2004, YFM350R Raptor 2005-2013.