RK Chain RKGB520XSO-120 Gold Pro RX-Ring 520 Pitch 120 Link Chain Fits: 2003 Honda CR125R, RK CHAIN GB520XSO 120 520 XSO GB RX-Ring Chain - 120 Links RK CHAIN GB520XSO 120 Manufacturer: RK Photos are for reference only, please read title and product description carefully.