Premium gold series Motocross chain, Lightweight, high-strength chromoly construction for today's high-powered 4-Strokes, 8,800 lbs, tensile strength for 125 to 530cc applications, The PT520 MX was designed to handle the increasing horsepower demands of today's 4-Stroke motorcycles; all components of the chain use a ProTaper 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 8,000 lbs, of tensile strength,
