Can this be done?

[HiperEX]

can u use any dirt bike engine parts and bolt them up on a 300ex? i seen that u can put the crf head or whatever the top part of the motor onto the 400 motor is this right well if anything like this will work on a 300 let me see them or tell me so

[BadA$$440]

I dont know where you heard that at cuz a CRF is liquid cooled head, there is no way it will fit on a 400ex. And why would you want toput dirtbike parts on ur 300? it doesnt make sense to me

[joeroadking]

he must mean xr400 the head would fit on a 400ex . but not the 300., as far as other models with the right welder, dremel, blowtorch, duct tape and 3 inch drywall screws, and good old jb weld. all atvs and dirt bikes parts can be made to fit each other!:devil