Designed, tested and produced with the highest level of Pro Taper quality. The gold series chains are purpose built for today's demanding 4-stroke bikes and ATV's. Pro Taper chains are manufactured with lightweight, ultra high-strength chromoly steel alloy for added performance and durability. Premium gold series motocross style chain. Lightweight, ultra high-strength chromoly construction. All components use a Pro Taper exclusive heat-treating process to aid in the lifespan and durability of the chain. Average tensile strength of 5,000 pounds. Wear life index: 100. Designed for 50 to 125cc applications. Includes a clip-style master link. Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.