Chain Application: OffroadChain Length: 120Chain Type: 520Marketing Color: GoldPremium gold series Motocross chain. The PT520 MX was designed to handle the increasing horsepower demands of todays 4-stroke motorcycles. All components of the chain use a Pro Taper exclusive heat-treating process to aid in the life of and durability of the chain. Designed for 125cc to 530cc applications. Lightweight ultra high strength Chromoly construction with a 8800 lb. tensile strength.