'14 YZ450F with WR 4th/5th - top speed?


3 replies to this topic
  • GHILL28

Posted May 16, 2016 - 08:42 AM

#1

Anyone know what the difference in top speed would be with stock 13/49 gearing in a '14+ YZF with a stock 5th gear vs a WR 5th gear?



  • grayracer513

Posted May 16, 2016 - 09:40 AM

#2

At 10K in 5th, no allowance for tire slip, rolling diameter not adjusted, the YZ450 5th yields 84.41 mph, and the WR 5th yields 95.67 mph.  That's 8.44 MPH/1000rpm vs. 9.57 MPH/1000rpm.



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

Posted May 16, 2016 - 11:05 AM

#3

Gray racer what is the top speed on yzf with 14/48 gearing

  • grayracer513

Posted May 16, 2016 - 12:03 PM

#4

Gray racer what is the top speed on yzf with 14/48 gearing

 

(Engine RPM / (primary drive ratio x 5th gear ratio x final drive ratio)) x wheel circumference (miles) x 60

 

 

 

 

 

 

 

 

92.8 MPH  (assuming you meant a YZ450F)







Related Content

Forums
Photo

Michigan Motocross Tires by 288yz450


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

Thinking about Yamaha 250... by Arctic Pride


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

Megabomb Fitment by 288yz450


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 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.