CRF450 in a 400EX

[quadmaster88]

I was just wondering if there were any companies that make motor mounts or anything that you would need to put a 450 motor into a 400ex... anyone done this or any advice? how much it would cost..custom mounts...etc...

atv fourplay (http://www.atvfourplay.com/services/index.htm)

[quadmxracer]

JB Racing does and its cheaper also. I believe Jody told me $425 to convert your frame, and $75 for your swing arm. So about $525 for all. ATV 4 Play charges like $600. JB Racing sells mounting brackets and spacers as a kit for $85 which you will need, and will still be cheaper than ATV 4 Play $600+$85, nothing against ATV 4 Play but if your on a smaller budget I'd go with JB. But JB does excellent work also. Neither of these companies include powdercoating in the cost either thats extra unfortunately.

[trx400exxracer]

http://www.wrcracing.com/shop/index.php?main_page=advanced_search_result&search_in_description=1&keyword=crf+450

walsh $94 for motor mounts

[ST87]

I'm also interested in doin this for MX racing and was wondering what everything you have to buy and do to it was the engines that i have found usually come with just the engine no carb, elec., kick starter uaually, and shifter. what all do i have to do to do this right.

[400exrider707]

Originally posted by trx400exxracer
http://www.wrcracing.com/shop/index.php?main_page=advanced_search_result&search_in_description=1&keyword=crf+450

walsh $94 for motor mounts

You do know that the stock frame isn't going to accept that engine with just different motor mounts? The frame will have to be modified a bit to accept it.

[trx400exxracer]

Originally posted by 400exrider707
You do know that the stock frame isn't going to accept that engine with just different motor mounts? The frame will have to be modified a bit to accept it.

yeah I know that I would think it would be safer to just by the frame from walsh it does take some $$$ but it might be better than screwing up the 400ex frame

[prepracing]

check out "kustomfab2003" post in the open forum he has his up with pic's. you might ask him about it