The RK GB520MXU-120 Chain is the ultimate lWhen conditions get muddy, sandy, wet, or runners just want a long running chain.
The RK GB520MXU-120 Chain features ultra-thin UW seals which are perfect for motocross with tight clearance and offer triple the life of an unsealed chain. RK UW-Rings use triple barrier grease protection and anti-debris technology. Debris protection is vitally important to maximize chain life by eliminating the friction of debris between internal components.
RK's UW seals also feature small contact points to reduce cold start drag. UW ring thickness is 43% thinner than o-ring with longer service life. The MXU Sealed Motocross Chain weighs just 3,04 lbs per 100 links, making MXU the lightest sealed off-road chain on the market.