KX Riders

Maintenance & Technical => KX250 / KX125 => Topic started by: blackkx on February 25, 2007, 11:48:20 AM

Title: rear shock
Post by: blackkx on February 25, 2007, 11:48:20 AM

 I have a question about setting the sag  height ... How exactly do you adjust it and do i need any special tools to do so ???? any input would be highly appreciated .... thanks, Mike

Title: Re: rear shock
Post by: alan on February 25, 2007, 12:00:34 PM

Check out this thread!

http://www.kxriders.com/forums/index.php/topic,563.0.html

Title: Re: rear shock
Post by: The Flyin Hawaiian on February 25, 2007, 12:18:25 PM

Put the bike up on a stand. Measure from one fixed point to another, such as from the rear axle nut to a point on the fender. Mark the spot on the fender with a piece of tape so you measure to the same spot. Take the bike off of the stand and sit on it with all of your riding gear on. Bounce up and down on the seat a few times to settle the suspension. Have someone else measure from the same fixed points. The differance between the two measurements is your sag. Most people run about 4 inches of sag. I set mine to 3and3/4 inches w/o my gear on.
 As far as special tools go, you only need a hammer a long flat blade screw driver and a tape measure. Be carefull not to slip and damage the threads on the shock body. You tap the lock ring loose on the shock, then you loosen or tighten the adjuster ring according to what you got from your measurement. For example, if you had 5 inches of sag, you will want to tighten up the ring. If you have 3, loosen it. Its easier to adjust the rings with the bike back on the stand. Sometimes you could grab the spring and turn it in the direction that you need.

Title: Re: rear shock
Post by: The Flyin Hawaiian on February 25, 2007, 12:27:36 PM

I forgot to mention the static sag, as per the above link mentioned. If after you set your sag, and you have no static sag, you will need to go to a stiffer spring. The shock will be topped out and have a sort of bouncy feeling when pushing down on the seat.

Title: Re: rear shock
Post by: Danger4u2 on February 25, 2007, 12:47:14 PM

Set your race sag first.

http://www.tootechracing.com/suspension_tips.htm

Check your static sag to determine if you have the proper rear spring rate.

http://www.tootechracing.com/Static%20Sag%20Suspension%20Tip.htm

Title: Re: rear shock
Post by: Danger4u2 on February 25, 2007, 12:56:41 PM

Review of the KX 250 rear shock.

http://www.tootechracing.com/2003%202004%20KX%20250%20Suspension%20Review.htm

Title: Re: rear shock
Post by: blackkx on February 26, 2007, 04:29:10 AM

thanks for all the help ... im gonna remove the subframe and preload the shock a  little bit more . thanks you guys are great  :mrgreen: :mrgreen: :mrgreen:

Title: Re: rear shock
Post by: blackkx on March 06, 2007, 09:34:35 AM

 well the shock is garbage . went riding on a monster outdoor motox track and it leaked all the fluid out and is like a pogo stick now... does anybody know if a 99-02 rear shock will fit my bike , my bikes a 98 ... anyone with knowledge on this matter please help . thanks

Title: Re: rear shock
Post by: KDXGarage on March 06, 2007, 09:41:17 AM

I used to rebuild KDX suspension as a hobby, so maybe I can shed some light on it.

Do you know if your current shock is damged so bad that it can not be rebuilt?  Pretty much any shock you get off eBay or elsewhere is going to need a rebuild, anyway.

Stop riding it with the shock in that shape, by the way.  You will surely damage it and/or yourself.