250r Keihin carburator on 400ex

[fourtrax400ex]

hy, im not a professionanl in carburator but this is the question :is a keihin pj38mm flatside carburator will fit on a 400ex and if yes, do you think that this mod will work and give more power? i also have an xrcam and wiseco 11:1 piston

thanks

Don't think so,,I beleive a 4 stroke carb is a pumper carb that acts different than a 2 stroke motor..I'm not a carb guru by any means either but I'd have to say no..

[400exRacerX]

Yeah, i'm with rico on this one too, i would have too say your best bet is a edlebrock quicksilver, lectron, or a fcr carb. or if you can find one on ebay and get a good deal.

[WB400ex]

yup me too im with rico