450 exhaust on a 426??

2 replies to this topic
  • ____Kurt____

Posted March 11, 2007 - 06:16 PM


my friend got a 03 yz450f and i have had my 01 426 for about a month now and none of the current exhausts are made for an out of date bike(my 426). i haven't gotten around yet to try to put his on mine confirming i can get a 450 exhaust. i was just wondering if anyone has done this or if they know it will work. i'll probably try it anyway i just want to know if it will in advance. thanks

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  • grayracer513

Posted March 11, 2007 - 08:03 PM


Technically, they don't fit. However, they come very close to it, and if you use an exhaust that is built with a spring slip fit connection at the joint of the mid pipe to the muffler, and with a muffler bracket that can be moved around on the muffler, you can just about always get an '03-'05 exhaust to fit a 426. Sometimes you'll have to file the hole in the mid pipe mount on the subframe a little bit.

FMF and Yoshimura exhausts are typically made in the above manner.

  • ____Kurt____

Posted March 12, 2007 - 08:44 AM


thanks gray. yea i think im going to try it this weekend. he has a stock exhaust and he is going to order a whole system and if it works he's giving me his ti-header and muffler/midpipe. i have a stock header and a procircuit 496 muffler/midpipe

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