is it true that a 250x cdi will add 1,500 rpm to a 300ex

 

NO

 

Are you sure?

i've heard this from several people

where did you find out your "NO" at?

 

four stroke tech
when I threw the counter balancer out of my 300ex I put a 250x lower end in it and had to use the 250x cdi for it to run

 

I dunno about the 250x cdi but i put a 300 4x4 rev limiter on my 300ex and i couldnt hit the rev limiter tried really hard too.

 

why did you take off your counterbalancer?

 

I did not purposely take it out. It decided on its own to come through the cases. Instead of spending over $700.00 in parts I had a 250x lower end I put in it. which worked out good because I mx race it and saved almost 30 lbs minus the starter and battery

Thanx,
Brandon

 

My friend had an X with a Curtis Sparks 267 Stroker in it. Supposidly it had a 350X box on it, but I took it off one day and tried it on my 250x, but it did not work.