crf450...400ex

[426kidz]

ok guys I have a pretty built 426ex...i want to swap in a crf450 motor...anyone have some pics or links to builds like this and or advise and my needs to get this done???:D

[mx Eli]

I posted a link to a great step by step thread just awhile ago look through the last 5ish pages of threads. if you cant find it let me know I'll get it for ya

[426kidz]

found it...thanks alot...how much power gain can i expect when i decide on this?

[250x_kyle]

a lot more then that 400ex put out with a slightly build crf motor.

[laeger400]

Take your time. One wrong move can cost you a lot of money and time. I bought a lsr 400ex that was converted to a CRF and i am rebuilding from the radiator back.

[426kidz]

yeah i mean my 426 is pretty solid and has balls, but if i decide to do this im gonna take it slow and and make it a winter project.anyone compare to a 450r?

[89trx250r]

production quads dont hold a candle in the wind to hybrids that dirbike motor probably makes easily 10 more horsepower then your 400ex motor and not to mention how quickly it revs :)