420,428,520MXU
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Ultra Thin Sealed Chain for Off Road Racing Use
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One of the lightest Sealed-Ring enduro/motocross chain available on the market today. Made for the professional enduro/motocross racers, Next generation of enduro/motocross racing chains featuring RK’s only technology of Ultra Thin Seal, U-Rings or UW-Rings.
Features UW-Ring which extremely improves the chain life and lower friction, providing high performance under enduro races especially muddy condition.