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RacinNinja · April 11th, 2016, 08:43 AM

48 HP out of a Ninja 250??? That is a pretty lofty goal....you're talking about adding 20 HP to a stock motor, almost double.

Bigger valves will need larger ports, larger carbs, and bore/stroke increase to be effective. Add a cam in there as well.

For the money it would cost, you could buy a 300 and get there much easier.....

April 11th, 2016, 08:43 AM	#2
RacinNinja Vintage Screwball Name: B Location: Washington Join Date: Feb 2016 Motorcycle(s): 2011 Ninja 250, 2008 Ninja 250, 2019 KTM 1290SDR, 2017 FZ10 Posts: A lot. MOTM - Mar '16	48 HP out of a Ninja 250??? That is a pretty lofty goal....you're talking about adding 20 HP to a stock motor, almost double. Bigger valves will need larger ports, larger carbs, and bore/stroke increase to be effective. Add a cam in there as well. For the money it would cost, you could buy a 300 and get there much easier..... __________________________________________________ Goin' fast on slow bikes!