kciH good point about the valves, custom exhaust is not a problem, mines custom. Kodiak01 I'll be riding the DS till I get the new toy built, and no I don't want a cracknfail. Recondude I have a friend with a yzf426, and I don't like bikes on my track (it's a quad track). zukimanmx that sounds like a great idea, but if the arens frame is half the price well... ya know. WiredCincmars something tells me to stay away from 400ex's.
I'm thinking 450f in the LRD aluminum frame, roll design a arms and swingarm (what a arms and swingarm would be better?) Ohlin's shocks Etc... Etc...

 

If you're spending so much money, might as well go with PEP ZPS shocks instead of the Ohlins, just my opinion. Why no cranknfail[img]i/expressions/face-icon-small-smile.gif[/img]?

 

no cracknfail (cannondale) because there are no dealers around here or even close, and if you beat your quad like i do your gonna need parts, no dealer no parts.

 

Houser makes frames for both of those engines:

http://www.houser-racing.com/

I don't know about the other frame because when I looked I was looking for a 250r frame.

 

thanks killer98warrior, but i'm very fimiliar with houser racing, I like the idea of being able to put 19 inch shocks on it, just don't know how strong the frame is, will I be welding on it after one season?