RK 530Ks Chain Crafted from carbon alloy steel, RK's KS chains undergo a meticulous heat treatment and shot-peening process to ensure unmatched strength and durability. This line boasts pre-stressing and pre-stretching of chains to deliver exceptional performance with minimal elongation throughout their lifespan, setting a new standard for chain durability and efficiency. Features: Manufactured from heat-treated and shot-peened carbon alloy steel Pre-stressed and pre-stretched for maximum longevity Clip type master link included Made in Japan Specifications: Tensile strength: 7,100 lbs Max CC rating: 250cc / 400cc Max Horsepower: 60Hp