Best 400ex Bore

[Blastermax]

Hey I race MX and I was wondering what the best for Mx on a 400ex is.....
400...
416....
440...
Im sure this has been posted before but I was wodering, Thanks!

[400exredrider]

this topic is all over.. do a search

[jonc623]

i would say 416 or the 426 the 440 makes alot of power but dont rev as fast

[400exredrider]

it depends what your budget is,,, most 440s that are built arent even as fast as most of the 416/426s because they arent built as well... id recomend starting at 416 with port and polish a cam and a carb and full exhaust,,, this setup will cran out some power

[Joe400ex]

ya i want to put a 416 with stage 2 cams but a stock carb will that be fine:confused:

[Blastermax]

Well I have a pretty Large budget so im thinking ill go with a worked 426 kit?

[cals400ex]

a stock carb will work just fine.

[Natertot426ex]

Originally posted by Blastermax
Well I have a pretty Large budget so im thinking ill go with a worked 426 kit?

good choice:cool: