All RK chains are pre-stressed and pre-stretched to ensure equal load distribution and minimal maintenance They`re made of the highest grade medium carbon alloy steel available; with all components shot-peened and heat-treated Heat-treated medium carbon alloy steel construction All components heat-treated and shot-peened for maximum strength Two-point pin riveting and solid rollers For motorcycles up to 400cc that did not come with an O-ring or heavy-duty chain as standard equipment M420 - For street bikes up to 80cc M428 - For street bikes up to 125cc and dirt bikes up to 80cc M520 - For street bikes up to 250cc M530 - For street bikes up to 400cc
STANDARD (M)
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