RK GB520 MXU Chain
The RK MXU is one of the lightest sealed-ring Motocross chains available on the market today. Made for the professional Motocross racer, the GB520MXU is the next generation of Motocross racing chains featuring RKโs UW-sealing rings. MXU chains are designed to provide the most consistent power delivery and increased chain life. All components are heat treated using RKโs exclusive HIT (Heat Induction Transfer) process. MXU has a maximum tensile strength rated at 9,000 foot pounds, weighs a mere 3.0 lbs for 100 links and can handle any MX race application from 125cc to 500cc.
Features:
- Made for the serious Motocross / off-roadย racer,ย who values every ounce of performance
- GB520MXUย chains feature chromoly steel construction with seamless rollers and bushings withย oversized special alloy pins for added strength
- All components are heat-treated using RKโs exclusive HIT (Heat Induction Transfer) process
- 9,000 pound tensile strength
- Includes clip style master link
- U-Ring sealing technology
- Includes clip style master link
Recommended Applications:
- Suitableย for professional level 125cc to 500cc open class off-road racing












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