I do have one engine question tho I have a mc21 frame do all model of engine bolt up like 18, 21, 28 etc and I come across alot of RS125/250 parts do things like there heads work on nsr crank case sorry if these are dumb questions but I am new to nsr!
oh another thing which swing arm provides the best stiffness/feel I dont care what looks cooler haha I know the single side 28 weighs more is it as strong/stiff as the 21?
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