Description
Rk’s 420mxu2 will come with rk’s u-seal for increased durability without increasing drag.Rk’s uw-ring seals utilize triple barrier grease protection plus anti-debris technology.Anti-debris protection is vitally important to maximize chain wear life by eliminating debris friction between internal components.Rk’s u & uw seals also feature small contact points to reduce cold start drag.U & uw ring thickness is 50% thinner than o-ring with longer life time.Mxu2 is available in 420 pitch.
