the 400 is still small and light enough to be a direct comparison to the ninja 250, and powerful enough to compare it to slightly larger bikes. it out performs Honda's 500, with some bolt on parts its very close to the power output of the ninja 650. I think this is the bike i have liked the most out of the 7 road legal bikes i've owned.
ninja 400 can reach 53 hp with very minor bolt on parts, and the 650 is about 64 hp at the wheel. not to mention the 400 is much lighter than the bigger 650.
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