Rear Shock ID - KDX220

Started by Byte, Oct 31 2009 02:28 AM
7 replies to this topic

  • Byte

Posted 31 October 2009 - 02:28 AM

#1


How can I ID the existing rear spring installed on the bike?

I note the following part numbers and ratings for each of the available rear springs for the KDX:

92144A SPRING, SHOCKABSORBER, K=4.8 (BLUE)
92144B SPRING, SHOCKABSORBER, K=5.2 (BLUE)
92144C SPRING, SHOCKABSORBER, K=5.4 (BLUE)

What are the loading maximum weights for each of these springs?

Byte

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

  • KDXGarage

Posted 31 October 2009 - 04:58 AM

#2

One's main concern would be that the sag numbers are correct. If the sag numbers are correct, then the current spring rate is not important. If they are off and a spring change is needed, then the current spring rate can be tested by a suspension shop, with an adjustment up or down on rate from that rate.

  • Byte

Posted 31 October 2009 - 05:13 AM

#3

THansk KDXGarage.

I will check the sag.

Does any ID exist at all on these springs?

Byte

  • hi_im_sean

Posted 31 October 2009 - 10:19 AM

#4

ive been wondering how to id springs for a long time now and havnt found the answer, i would assume there is no way to tell except to run it on a spring dyno. i need to set up my kx properly and i have no idea what spring are in it, so i may just have to spend the money to get all new springs to be sure i know what i got

  • KDXGarage

Posted 31 October 2009 - 11:02 AM

#5

Is this a dirt version KDX or the SR version?

As best I know, in the USA, the stock springs carry no marks on the 1995+ KDX shock springs. They are 5.0. Each subtraction or addition of 25 pounds requires roughly a .2 Kg/mm change in rate.


hi_im_sean, I have done fork springs with homemade methods and very good results. I don't see someone doing homemade methods on shock springs due to the rate being about 10X usually. Also, the amount of spring compression needed to get an accurate would be a problem for the home user.

Here's a shock spring tester:

http://www.intercomp..._TESTER_761.cfm

  • hi_im_sean

Posted 31 October 2009 - 01:51 PM

#6

KDXGarage said:

Is this a dirt version KDX or the SR version?

As best I know, in the USA, the stock springs carry no marks on the 1995+ KDX shock springs. They are 5.0. Each subtraction or addition of 25 pounds requires roughly a .2 Kg/mm change in rate.


hi_im_sean, I have done fork springs with homemade methods and very good results. I don't see someone doing homemade methods on shock springs due to the rate being about 10X usually. Also, the amount of spring compression needed to get an accurate would be a problem for the home user.

Here's a shock spring tester:

http://www.intercomp..._TESTER_761.cfm


yea thats what i mean, just too hard to do at home, i guess you could make a jig though? i understand the theory, how much weight to compress the sping xx mm, just the tools are out of reach, i wonder what a shop with the right equipment would charge. i have never seen a number, stamped or printed or anything to indicate rate, let alone manufacturer

  • Byte

Posted 31 October 2009 - 02:45 PM

#7

many thanks boys.

  • KDXGarage

Posted 01 November 2009 - 02:08 PM

#8

The KYB springs from the last few years have a paint dot to indicate rate.

yellow is 5.3, pink is 5.5, plus others



  1. ThumperTalk
  2. → Dirt Bike
  3. → Make / Model Specific
  4. → Kawasaki
  5. → Kawasaki 2-Stroke
If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!