What springs do I need.


6 replies to this topic
  • Two-Six

Posted October 15, 2008 - 05:19 PM

#1

Hey guys, I just got me a 06 YZ450F, it is sick. Anyway the suspension is set up for a 230 pound beginner and I am a 180 pound fast C rider. What springs do I need, I think stock springs will work? Also, it has been revalved to and I am wonering if I just change the springs will the valving work good enough for a couple months till I get enough money for the full revalve?

I have I think .48 fork springs with a 5.7 rear? I will check later. I also have 250F springs, .44, 5.1 rear.

  • grayracer513

Posted October 15, 2008 - 06:08 PM

#2

There is a spring rate generator at these two sites:

http://www.racetech..../searchdirt.asp

http://www.mx-tech.c...pring_generator

  • Two-Six

Posted October 16, 2008 - 02:24 PM

#3

I used the Race Tech one and it said I need .46 and a 5.5, is there that big of a difference between a .46 and a .47?

O yea someone has some 08 stock springs they want to sell me, I have look at both spring calculators and they are telling me different spring rates. One is saying .48 fork springs and one is saying .47, and one is saying 5.3 and the other one says 5.5. Which one is it?

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

Posted October 16, 2008 - 06:22 PM

#4

The stock '08 springs are .47 and 5.5, and the rear is titanium.

.47 kg/mm pencils out to 26.26 lb/in. .46 is 25.7 lb/in, so that's a difference of 1.1 lb/in for the pair. Not huge, and if you really are fast, you might like the heavier rate.

  • Two-Six

Posted October 17, 2008 - 01:49 PM

#5

Thanks, I will just go for the .47's and lower the oil level if it's to much, I doubt it will though.

Now a more serious question, what graphics is everyone running with the white plastics? I can't find a set that complements white plastics.

  • Budlite

Posted October 18, 2008 - 09:12 AM

#6

Before I went out and spent a lot of money, I would try putting in one fork spring and the shock spring from the 250F. This combination may surprise you and it doesn't cost much to try, only a little time and a little oil.....

  • Two-Six

Posted October 19, 2008 - 05:28 PM

#7

Before I went out and spent a lot of money, I would try putting in one fork spring and the shock spring from the 250F. This combination may surprise you and it doesn't cost much to try, only a little time and a little oil.....


Wow, I never thought of this, too bad cause I am about to get me some springs.





Related Content

Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 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

James Stewart back on a YZ450F by YamaLink


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

Megabomb Fitment by 288yz450


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