Free shipping on eligible orders of $100 or more. Oversized and freight items excluded.

Shop parts / RK Chain / New

RK Chain GB520MXU-100L UW-Ring - Gold

RK Chain · New

RK Chain GB520MXU-100L UW-Ring - Gold

MPN GB520MXU-100 · Store SKU rkcGB520MXU-100

$177.55
CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/7/2026, 5:45:40 AM UTC. Adding a part does not reserve it.

30-day returns for unopened, unused new parts

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

When conditions turn muddy, sandy, wet, or if riders just want a long lasting racing chain, RK offers a sealed supercross, motocross and off-road racing chain called MXU. RK's GB520MXU features ultra-thin UW-seals which is perfect for bikes with narrow clearance and delivers triple the life expectancy when compared to a non-sealed chain. 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 UW seals also feature small contact points to reduce cold start drag.

Manufacturer fitment & guides

Check GB520MXU-100 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

More from RK Chain ↗See the JuiceBuilt workshop ↗

YOUR NEXT MOVE

Your build.