Helping identifing bike!

4 replies to this topic
  • cordova527

Posted July 21, 2011 - 12:20 PM


Hello everybody, I purchased (what I thought) was a 2002 yzf426. Bike has been amazing until recently my clutch began slipping then my cable snapped. I bought an EBC clutch kit and new cable and went to install it however my new clutch kit not only doesn't fit, but included 6 clutch springs where as my bike has 5. After checking the manual which showed an 02 having 6 clutch springs I checked a 400f manual and sure enough it has five. The odd # on frame decodes 02 yz 426f.....can't decode motor # but case says 399cm above header. Can anyone give me any feedback or help me decode my serial # on the motor?

Vin # - JYACJ01C12A027042

Engine # - H38E - 004925

  • grayracer513

Posted July 21, 2011 - 01:23 PM


... my bike has 5 (clutch springs). ... case says 399cm

That's a 400.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • cowboyona426

Posted July 21, 2011 - 02:51 PM


Sounds like someone stuffed a 400 engine in a 426 frame...

  • yzf1999

Posted July 21, 2011 - 03:07 PM


I converted a 99 yz400 into a 426.....ordered a 2000 426 jug and thumper racing made a 426 piston that fit the 400 jetting

  • Yamiryder

Posted July 21, 2011 - 06:38 PM


Yep, 400 in a 426 frame.

Related Content


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

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

Thinking about Yamaha 250... by Arctic Pride

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 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.