quick question, you know if a 200x engine will bolt right in? I have that frame and everything and most front suspension, and I am getting 400 +2 swingarm, 400 axle/hubs/carrier and raptor rear shock and found a kid with a cl;ean 200x I could probably get for about 1g, and I was hoping to take the engine, steering stem, bars, controls, wiring, etc to finish of my build until I can afford to build a 330 or something to drop in.

 

man thats way to big for that little 250 engine i have a 78mm big bore and its bored to a 307 and im running with the 400's bit thats with MX porting ( well read my modds and then you will see ) ( im not listing them again) i really dont think you would get any thing more just more tourque thats all no geering difference or anything so i think my 250x would take one bored to a 408 or some crap like that.... well this is IMO oh powroll said they only go up like 2 more bore sizes and thats a 80mm and an 82mm Big bore but they said i will get the most gaines from the one i have in there now.... well hope this helps clear everything up.. and no u cant interchange the engine with the 250x and 350x but the 350x engine will fit in the 250x frame!! powroll sels a kit to make it work or like 100 bucks

 

ive been looking into a 350x since day1 but everytime one comes around, it goes before I have the money for it. I am thinking now maybe a bored/stroked 300ex motor, isnt like 352cc what a BB/stroked 300 ends up at commonly?