yz400f vs 426 stock exhaust dimensions?

3 replies to this topic
  • Shane_Bettin

Posted June 29, 2004 - 07:35 PM


im wondering because ive gotten my second slip on from an unknown company and again its doens't bolt up and fit perfect. the first time i had recieved a 450 pipe in stead of a 400 and the mounting brackets were off. ive now recieved my 2nd pipe and a tag on it said 426. the brackets will work but when i tighten the lower one above my brake it ends up tweaking the header out a little, and where the header connects to the pipe, its not a tight fit. the pipe only goes over the heard about and inch rather then 2 inches, this allows the exhaust to leak out from there. ive now waited about 3 weeks to a month for this pipe and if i get a 3rd one sent out for my 400 will be different then the 426 and bolt up. im almost ready to ask for a refund because of this bs. its just ive heard alot of good stuff about this pipe on here and i want one.

  • DPW

Posted June 30, 2004 - 02:39 AM


I had a '99 YZ400F(Great bike) and I put on a complete stock exhaust system from a '01 YZ426F without a problem fit like a glove.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • RJB

Posted June 30, 2004 - 03:55 AM


Are you sure your subframe is straight? I picked up a second hand (stock) YZ400 pipe for my 02 426 and it fitted without a problem, so I would guess that they are the same fitting, unless the guys I bought it from got the origin wrong

  • Shane_Bettin

Posted June 30, 2004 - 11:08 AM


ya its pretty straight. is there some kind of heat wrap available so that i can wrap it up and seal it. it doesn't lots, im just worried about water getting in when i wash it. i don't think it would lean it out that much either.

Related Content


2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride

Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.