CITY WEST YAMAHA
MXU is The Lightest Sealed-Ring Motocross Chain available on the market today. The MXU chain is 5% lighter than KZU and 8% lighter than competitors
popular sealed off-road chain. Made for the professional motocross racer, GB520MXU is the next generation of motocross racing chains featuring RKs new UW sealing
rings. MXU chains are designed to provide the most consistent power delivery and increased chain life. All components are heat treated using RKs exclusive HIT
(Heat Induction Transfer) process. Ideal for MX race application from 125-500cc.