another spring question


3 replies to this topic
  • luvnoldcars

Posted April 07, 2012 - 01:29 PM

#1

i have a 2012 yz450f with a 5.4kg rear spring that beats me to death on rough tracks. the free sag with this spring is 42mm and race sag is 99mm. will a 5.3kg spring get me to 30 to 35mm free sag and smooth things out or should i go with a 5.2 spring. almost forgot i weigh between 155 and 160lbs depending on the day (without gear).

  • FZ1426

Posted April 07, 2012 - 08:10 PM

#2

Put the stock spring back on. You've got too much preload on the spring.

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

Posted April 07, 2012 - 08:54 PM

#3

Put the stock spring back on. You've got too much preload on the spring.


Explain

  • grayracer513

Posted April 07, 2012 - 09:05 PM

#4

i have a 2012 yz450f with a 5.4kg rear spring that beats me to death on rough tracks. the free sag with this spring is 42mm and race sag is 99mm. will a 5.3kg spring get me to 30 to 35mm free sag and smooth things out or should i go with a 5.2 spring.


Either a 5.2 or a 5.3 should be right. The 5.3 might not get you the sag reading you want, but it will be closer than what you currently have. If you're a fast MX type, choose the stiffer one of the two. If the bike is beating you up, spring rates might not be your only problem.





Related Content

Forums
Photo

Snake pit oct 30th by The Anvil


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

YZ450F 03 Sparks driving me crazy by SirAttard


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

WR Camshaft Swap Info


Articles
  • 0 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews
Forums
Photo

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 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.