Quote:
Originally Posted by sharky nrk
Did you simply use a OEM Ninja 300 cylinder bank and pistons to complete the job?
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no, we went up with a larger bore, while the oem 300cc actually has a different crank shaft and piston rod if im not mistaken, allowing for a longer stroke.
OEM 250cc: Bore/stroke: 62 mm X 41,2 mm
OEM 300cc: Bore/stroke: 62 mm × 49 mm
OEM 250cc cilinder stacked under the bore up kit
and some die by side comparisons:
if you put this bad boy into a oem 300cc bike, you would end up with like 356cc~
a friend actually told me to try source an oem 300 crank and piston rods if i wanted to go up even more, but i think ill leave it at 300, ha ha...
i haven't even put in the bigger throttle body yet, which should help in the top revs where the engine needs that extra little bit to breathe.