I am looking for a 350X top end: Cylender head and sleave to put on my 300EX. Then bore and stroke it, if anyone knows where i can get one please contact me, I know of a few ppl that have done this and it uped their cc's to 396 and there hp went from 18hp to 35hp!

 

I will soon be getting a 300ex and dream about doing this to it. Could you give me some info on this project. My e-mail is Fox_racer23@yahoo.com. Have you ridden one? How fast do they go? Did they make any chassis changes? Do you need to make any chassis changes? What about the rev limiter? Jeremy Schnell races one in a 250r frame. I suggest putting an ad in your paper. In the back of DirtWheels magazine are advertisements of used parts and honda discount parts might have an old one thats still good.

 

Check out the October '99 issue of ATV Sport. On page 43, there is an ad for East Coast ATV. East Coast ATV is selling new 350X engines for $1300. Their number is 215-529-4632. I hope this helps.

 

will a 350x topend work with a 250x bottem end?