2000 426 or 400?

8 replies to this topic
  • redrider34

Posted September 16, 2014 - 05:12 PM


I've just bought a 2000 yzf something, the seller stated it was a 400, I've heard they did not make a 400 in 2000 it was a 426. The jug by the exhaust says 399 cm3. Is this an accurate number to go by? Just curious, really don't care the thing runs great and is a leg breaker! Any insight appreciated though! Thanks.

Attached Thumbnails

  • 1410916225423.jpg
  • 1410916329181.jpg

  • YZX

Posted September 16, 2014 - 05:56 PM


It's a 400. 99 percent sure. Nice bike

  • redrider34

Posted September 16, 2014 - 06:20 PM


Thanks YZX, what gave it away? Is there any other huge difference's besides the extra displacement?

  • YZX

Posted September 16, 2014 - 07:23 PM


The 399cm3 did. If it was a 426, it'd say it. There are differences but nothing too major. It's a good bike, only flaw is that if you have the stock exhaust system, you need to remove the header to change the oil filter. Just be religious with the oil changes and you should be good to go.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted September 17, 2014 - 06:41 AM


Assuming it is both a 2000 model and a 400, it's a WR400.  Wide ratio gearbox, big stator and flywheel.  There will be evidence of lighting wiring having been on board if so.

  • redrider34

Posted September 17, 2014 - 07:07 AM


I'm leaning more twords a 99 now, it has a 4 speed, and no evidence of previous lighting. Any way I can verify year? Just trying to figure this out for when I have to buy parts.

  • grayracer513

Posted September 17, 2014 - 07:43 AM


 it has a 4 speed,


Not from the factory it doesn't.  ALL YZ400/426F and WR400/426F models were 5 speeds. 


Year of the frame is verifiable by the 10th character of the VIN.  Year of the engine is only determinable by a Yamaha dealer.  They can look up the engine number.   Doesn't make a lot of difference, though.  Parts for a YZ/WR400 are interchangeable '98-'00, and 426 parts from '00-'02.  The bikes are nearly identical from '98-'02 as far as chassis/body other than the smaller rear axle on the '98.

  • redrider34

Posted September 17, 2014 - 07:58 AM


Ok so 5 speed! Cool, was going too fast to pay attention. Thanks for the help guys. This is a great forum!

  • YZX

Posted September 17, 2014 - 01:22 PM


Id prefer the 5 speed over the 4 speed that was in the first gen Yamaha 450s.

Related Content


Help with 2000 yz426 by weekend woods racer

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  36 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

Is the 2016 GYTR Yamaha YZ450F too fast? by Fryboy

Dirt Bike   Special Interest Forums   Pro Racing
  • * - - - -
  • Hot  241 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 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.