520XSO Series Chain works great on 250cc to 750cc street and off-road vehicles. A Clip- type master link is included with every chain. Rivet-stlye  master links are sold seperately. Colors available are a Standard Gray finish or Gold.

Need a longer length for an extended swingarm - call us for a quote!!!

As part of their continuing quality improvement program, the RK Chain Factory has made a running production upgrade to their best selling 520XSO chain. The new upgrade XSO chain features RK's proprietary "RX-Ring" seal design and is offered in 520, 525 & 530. Viewed in cross-section, the RK "RX-Ring" has two lubrication pools and seal points versus the single seal point/pool design of a regular o-ring chain. RK's new XSO chains offer quality, performance and unbeatable value, for all but the most demanding high performance application.