EK Chain 630 SRO Chain The SRO Series presents an O-ring chain that marries affordability with unwavering quality and endurance. Including innovative features such as lightning holes and crafted with advanced heat-treated steel alloys, this chain embodies the exceptional quality and dedication that EK integrates into its comprehensive product range. Features: Can be used for street and touring motorcycles Compatible displacement: up to 1000cc Tensile strength: 10120 lbs. O-ring Lightening holes reduce weight without compromising strength Rivet type master link