Quote:
Originally Posted by crackez
I have a ninja 250r('09) (european model so yes I have FI ..although no fuel gauge)
Is it possible to exchange the crankshaft from a 300r? it should be a nice bump in horsepower without any "mods" and if you want some port job and maybe a 1mm or 2mm overbore pistons it should be quite a power boost(compared to stock 250r)
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Yes its possible. Use the 300 crank, rods and balance shaft with 250 pistons of your choice. The 300 head has bigger valves and works well. You will need to account for an extra millimeter in the base gasket, stack them or have one custom made.
https://www.ninjette.org/forums/show...&highlight=335