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?'s on puttin a cr or yz motor in trx 90
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Posted by: 06yfz450mxer

Iv'e seen on the net where guys have put a cr engine in these chassis , Is there a kit ?? and can u use the stock pipe from the bike ?? whats all needed ??????????? please give me info thanks joejoeboxer72@yahoo.com

Posted by: bracey

no they dont have a kit it will take some work i have a custom made pipe for a kx 85 motor in a trx 90 i will sell for 75.00 plus shipping thanks

Posted by: fcfab

It is not the easiest thing to do but well worth it when done right. If you have choice I would go with the raptor 250, easier to find long travel set ups.
If you go with the Cr 85 the pipe well have to be cut and re shaped.
Carey
Fc Fabricating

Posted by: 06yfz450mxer

Would love to do that but the way d3 runs the quad mini class they have no in between class so its 90cc then right to the big boy toys , so the apex quads run away with it right now , My son like to shift so I want to keep it to what he likes ........

Posted by: st8jacket

my brother just put a cr80 engine in a 250r frame to build my nephew a 90 mod..fairly straight forward,hardest part was the engine mounts,but they were simple..The head pipe was extended a lil bit so it sits down low and tucked up against the frame like it was built for it..

Posted by: st8jacket

here it is the day before it was started for the first time

Posted by: 06yfz450mxer

LOOKS SWEET MAN , I HOPE THIS TURNS OUT WE HAVE SEEN A COUPLE WITH A CR MOTOR IN A 90 CHASSI SO TIME WILL TELL .

Posted by: tireman43

I haven't built one or had a lot of experience, so correct me if I'm wrong...I thought a motor mount from the 400ex would work for the CR85 swap in these. I was thinking I read that some place and even saw pictures. Just my .02 cents.

Kevin