![RK 520XSO High Performance RX-Ring Motorcycle Chain - 98 Link](http://roco4x4.com/cdn/shop/files/dbbac600-653a-45ba-a7c0-91883f0961c9.1ddfdf0d1d1ce6dc41b25396c2d3de26_e4cefc4b-3c46-400d-b175-aa72956ac3f3_1000x654.jpg?v=1715376230)
![RK 520XSO High Performance RX-Ring Motorcycle Chain - 98 Link](http://roco4x4.com/cdn/shop/files/dbbac600-653a-45ba-a7c0-91883f0961c9.1ddfdf0d1d1ce6dc41b25396c2d3de26_e4cefc4b-3c46-400d-b175-aa72956ac3f3_1000x654.jpg?v=1715376230)
Description
The RK Chain factory has made a running production upgrade to their best selling 520XSO chain. The new upgrade GBXSO and non-gold XSO chains features RK's proprietary "RX-Ring" seal design and is offered in 520, 525 and 530. All versions are available in either gold/gold or standard steel color. 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 GBXSO chains offer quality, performance and unbeatable value, for all but the most demanding high performance application.