35x big bore

[350xrider911]

has any one used the 393 cc big bore kit from powroll if so, will the bottom end, hole up, or if u just replace the cluches, will it last for about 10 years or more, or will i have to rebuild in a year.

[evand]

i heard a few good things about them, but i dout you will get 10 years out of any big bore, no offence but big bore bikes usually dont get putted around and with the extra stress of a the motor work and getting ridden hard............................:beer

[350xrider911]

i want to make if enough to run with a 440ex. i can find a 250r i want to put a 400 ex motor in but no one is parting them out. around hear.

[3Wheelers4Life]

see this: http://3wheelerworldforums.com/showthread.php?t=69882

[OldSchoolin86]

I almost beat a 430x with my 400ex when it was basically stock! Also there is no way to stuff a 400ex motor in a 250r frame. It's not even close! Even if you cut the belly and the upper engine mount out of the frame to stuff the EX engine in there making an intake system work is nearly impossible. You'd have to cut the backbone out of the frame too and that doesn't leave you with much frame left............ ;)

http://miltechsolutions.tripod.com/offroad/atc440r/stuffedweb.jpg

[starky1234]

yea that sounlds and looks great