426 carb on 400

4 replies to this topic
  • clodeb

Posted August 17, 2011 - 06:28 AM


Hi everyone,just bought a wr 400 (already regreting it) will a yz 426 carb fit with a few jet change..i mean a fewon my wr 400 and run better than the stock carb It has been redone this winter with Wiseco piston and has a lot of compression. Also there was a Yosh rs3 exhaust but i replace it with the stock silencer for less noise. I am searching for a yz 426 stock exhaust so if anybody has one left over in there shed...just let me know. Any advise is welcome. I have read a lot on yam carb mods but i am a bit confused. Right now stock carb is 168 mj,45 pj dont know about needle position. thank you

  • byggd

Posted August 17, 2011 - 08:56 AM


Does this help??

http://www.thumperta...426 carb on 400

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  • pairodice

Posted August 17, 2011 - 02:59 PM


Pretty sure the exhaust from a 03 wr450 will fit . if so i have one i just took off w/ a new pmb insert i would like to get rid of . nice condition i can send pics thinkin 20 plus shipping maybe

  • clodeb

Posted August 18, 2011 - 04:46 AM


Yes i am interested send me pics and check for shipping with postal service,ground if possible ....clodeb2003@hotmail.com thank you

  • csmall06

Posted September 13, 2011 - 09:12 AM


Pairodice, I have an 01 426 and am needing a pipe. Send me pics if you still have it please, csmall06@msn.com I am in Farmington NM, 87401


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