RK 520 MXU UW-Ring Chain 800R Quadra-X ring design increases wear
Baker’s notes & crumb story
Description
RK 520 MXU UW Ring Chain 800R Quadra X ring design increases wear Quadra X ring design increases wear life and reduces friction by as much as 40% for maximum engine performance Both 420 and 428MXZ racing chains are the lightest and strongest in their class