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MXZ4 Chain (520MXZ4) - Off-road racing (MX/SX)
520MXZ4 is made for serious motocross racer, lightest and strongest motocross chain available today! Feature chromoly steel construction with seamless rollers and bushings, and oversized special alloy pins with RK Special HCR Treatment (Hard Chrome Treatment) for strong wear resistance. Ideal for the professional level racers 125cc to 500cc Open Class racing.