2003 450 interchangable with 2005 450???


3 replies to this topic
  • holker1

Posted December 25, 2007 - 06:52 PM

#1

Was wondering if a 2003 yz 450f motor would fit in a 2005 yz 450f?

  • ONLY4STROKES

Posted December 25, 2007 - 07:27 PM

#2

Yes it will, all the mounts are the same.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • holker1

Posted December 25, 2007 - 07:35 PM

#3

Thats all i needed to know thanks!!!

  • grayracer513

Posted December 26, 2007 - 12:29 AM

#4

Those two engines are externally identical, and 100% drop-in interchangeable. The ignition mapping on the '05 is milder, and the '05 has a slightly better head. The '05 also has a higher primary gear ratio. The difference is exactly what you'd get if you went up a tooth at the front, or dropped 3 at the rear.





Related Content

Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

YZ450F 03 Sparks driving me crazy by SirAttard


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Forums
Photo

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
Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
 
x

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.