RK GB530XRE-100 XW-Ring Gold ChainRK 530 XRE XW seal chain Gold Black RK 530XRE is designed with the concept of From the Circuit to the Street, not only suitable for general Street Riding, but also racing High Durability and Lightweight developed with FIM Endurance World Championship (EWC) champion teams Development started in 2019 with top EWC teams such as TSR Honda. RK 530XRE has a proven track record in the EWC, which requires high endurance performance, covering 4,500 km in a