Street machines thrive when driven by SRX Quadra X-Ring chains--the all-around value option from EK Chain. This series is manufactured with lightening holes, reduced friction points, and the exclusive X-Ring technology, which has been shown in lab tests to nearly double the life of your chain, compared with standard O-ring versions. SRX Quadras are available in a variety of finishes, lengths, strengths, and roller diameters. Select the EK Chain for your engine size … and know that your links are in it for the long haul!