Aluminum rear sprocket made from heat-treated 7075 T-6 aluminum. - Comes with self-cleaning grooves. - Everything matches the original equipment exactly for a 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. - The X-ring shape provides an exceptional seal with reduced friction. -Tensile strength of 8,120 lbs.