RK 520 MXU UW-Ring Chain 800R Improved stiffness and weight (4

Improved stiffness and weight (4

Extended PU synthetic gaiter helps seal out excessive water and dirt entry

Inner fleece lining for thermal warmth and comfort

It is related to HP

Quadra-X ring design increases wear life and reduces friction by as much as 40% for maximum engine performance

RK 520 MXU UW-Ring Chain 800R Improved stiffness and weight (4RK GB 520 MXU U Ring Chain MXU is one of the lightest sealed ring motocross chains available on the market today. Made for the professional motocross racer, MXU series is the next generation of motocross racing chains featuring RK's ultra slim U Rings or UW Rings. MXU chains are designed to provide the most consistent power delivery with increased chain life. All components are heat treated using RK's exclusive HIT (Heat Induction Transfer) Process.