Rear aluminum sprocket made from heat-treated 7075 T-6 aluminum. - Comes with self-cleaning grooves. - All OE matched for perfect fit and size. - ORH Gold X-Ring chain is the ultimate off-road chain for performance and durability. Features gold plating on the chainrings. - X-ring shape provides exceptional sealing with reduced friction. - Average tensile strength 8,120 lbs.