[engine mods] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVsPages:1
engine mods
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Posted by: riderssb250x
hey guys what do you think about these engine mods for a 250x the fst 288 kit i belive with a sleeve a 400ex carb and a hotcam? how will this work will i gain alot of power or do i need a port and polish? also if i went with a 330 sleeve for the 250x what would i need other than it like could i use stock valves and springs?
prety much i wana do a bore kit a 400ex carb and a hot cam but dont want to do valves springs and a port and polish how will this run?
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