![RK GB520XSO High Performance RX-Ring Gold Motorcycle Chain - 130 Link](http://roco4x4.com/cdn/shop/files/c938c5e1-c1eb-40b0-a948-b6318ee0210b.d8622259dbe10c13334b5857269dd5d4_1ab539aa-ba4d-4c54-ad99-470436840b1d_1000x654.jpg?v=1715387884)
![RK GB520XSO High Performance RX-Ring Gold Motorcycle Chain - 130 Link](http://roco4x4.com/cdn/shop/files/c938c5e1-c1eb-40b0-a948-b6318ee0210b.d8622259dbe10c13334b5857269dd5d4_1ab539aa-ba4d-4c54-ad99-470436840b1d_1000x654.jpg?v=1715387884)
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.