yz400 gearbox vs yz450


2 replies to this topic
  • scubaru

Posted May 25, 2006 - 10:22 PM

#1

Hi all, searched but can't locate the gearing ratios of a 99 yz400f. Only reason I'm asking is that my 04 yz450f that I just bought was owned and raced by a supermotard rider and his mechanic installed the yz400 gearbox into his 450. I found a post that said the 400 1st and 2nd gears were lower than the 426, and the 426 1st is lower than the 450 . I assume that the 5th gear on the 400 is higher than the 4th on the 450 which is why they did it . Any figures or a link would be appreciated. cheers

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

Posted May 26, 2006 - 01:29 AM

#2

Found it. Very last post on the last search. These are the figures I have been able to find from previous posts if anyone is interested in comparing them.

yz400f yz426f 06yz450f 05yz450f 05wr450f
1st 1.929 1.846 1.929 1.929 2.417

2nd 1.563 1.533 1.533 1.563 1.733

3rd 1.278 1.278 1.278 1.278 1.313

4th 1.096 1.091 1.091 1.05 1.05

5th .952 .952 .952 .84

Interesting to see that the 06yz450f has gone with some tried and tested gears from earlier models. And not that different (not counting primary and secondary cogs) from the yz400f . cheers

  • scubaru

Posted May 26, 2006 - 01:39 AM

#3

---yz400f/ yz426f/ 06yz450f/ 05yz450f/ 05wr450f
1st 1.929-- 1.846--- 1.929---- 1.929---- 2.417

2nd 1.563-- 1.533--- 1.533---- 1.563---- 1.733

3rd 1.278-- 1.278--- 1.278---- 1.278---- 1.313

4th 1.096-- 1.091--- 1.091---- 1.05----- 1.05

5th .952--- .952---- .952----- .000------.840
3rd time lucky





Related Content

Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies
Forums
Photo

Megabomb Fitment by 288yz450


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

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
 
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.