header pipe turns orange hot this normal?

3 replies to this topic
  • icemann

Posted January 13, 2002 - 03:54 PM


i just got a 98 yz400 i rode it for about 20mins and the header pipe gets so hot it turns orange is this normal if not do u know whats wrong

much thanks


  • humbertob

Posted January 13, 2002 - 04:01 PM


Nothing is wrong icemann, this is very normal in these bikes, 400 and 426 turns orange and glow in the dark, so don't let the bike idling a lot, these bike really needs fresh air all the time, nothing is wrong with your bike, is a common symptom in these kind of monster bikes ! :)

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  • tony_t.

Posted January 13, 2002 - 04:03 PM


It's normal for the header to get really hot. If you run the bike when it's dark you can really see it glow.

  • wnut426

Posted January 13, 2002 - 07:39 PM


form wot i can tell guys this is pretty normal my 2000 426 does this as well i thought it was pretty cool the frist time it happened but my bike runs great so im happy with it

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