300ex hybrid to be.

[MTDman11]

what motor should i put in my 300ex. looking for something not t expensive. i was thinking a crf450r

[g9901920]

i would not put a 450 mabe a 250 2 stroke?

[born2ride14]

four stroke 400cc motor

[TheNewn]

CRF250X motor. Electric start badass 250 four stroke.

or the WR250 motor (yamaha). The old one, not the new one with the 4 valve head.