Polaris camshaft timing chains are exclusively made by Cloyes for BC. With more than 50 years of racing heritage, Cloyes custom timing sets and race products feature advanced technology and unmatched quality, for the optimum racing performance. Cloyes is the North American leader and global designer, developer, manufacturer, and distributor of timing drive systems and engine components for original equipment manufacturers and the automotive aftermarket. As the complete timing authority, Cloyes backs its products with an unparalleled level of knowledge and experience that dates back over a century. Fits all XP Turbo, XP1000, XP900 and 570 models.