EK Motor Sport 530 SRX2 Series Chain - 114 Links - Natural The SRX2 series chains are an excellent value for any street machine. The SRX2 chains feature lightening holes, reduced friction and Quadra X-Ring design which increases chain life from 1 1/2 to 2 times longer than a standard O-Ring chain Premium All-Around Quadra-X Ring Chains Average tensile strength of 9,000 pounds