I would find a Honda 400ex frame. They are everywhere and alot of aftermarket parts for them. A arms, shocks, swing arms etc etc. And you can buy these parts everywhere.this is my first post and im very serious about doing this. i used to race quads and dirt bikes. i currently have a 05 predator troy lee and a 01 gsxr 600 with a 05 750 motor and many other custom mods done to it.
i am interested in putting my old 01 600 motor in a quad frame and curious to know what kind of frame would be best. i have seen ltr 250s with sport bike motors. which one is the easiest as far as doing the swap? which frame is close to being a direct swap but easier to find??? im asking all these because i recently found a raptor 350 with a blown engine for really cheap and was wondering if it may work in that frame.