Author Topic: How to adjust suspension on a 04 YZ250?? Update (Read 15489 times)

Braap257 · « **on:** July 29, 2010, 07:11:38 PM »

Im lookin to stiffen the rear shock a bit on my yz250. i heard it can be adjusted but how??? The front forks seem okay...

Charles Owens · « **Reply #1 on:** August 01, 2010, 07:29:17 PM »

There are 2 rings around the top of your rear shock tube, lossen the top one with a shock spanner wrench (or equivelent). Spin the lower one down to actually stiffen the rear spring, then spin the top one back down to it to 'lock' it. That is for a basic 'stiff' rear, that does not effect rebound damping.
Easy job, only takes a few minutes.

Braap257 · « **Reply #2 on:** August 02, 2010, 07:54:09 AM »

Thanks, I'm gunna try playin with it and see what i can do.

Coop · « **Reply #3 on:** August 02, 2010, 08:42:41 AM »

Powerplay is right. Really if it's too soft you should consider getting the proper springs and valving for your weight. Those compression nuts are really for setting your sag, if you crank them down a lot I bet your sag numbers will be way off.

Braap257 · « **Reply #4 on:** August 02, 2010, 09:33:45 AM »

Where can i find new springs coop?

scotty dog · « **Reply #5 on:** August 03, 2010, 01:59:05 PM »

race tech i think, they have a conversion chart to tell you what springs you need for your weight. If you check your ride height and stuff you will know whether the spring is too heavy or light for you.

Coop · « **Reply #6 on:** August 03, 2010, 02:42:00 PM »

Sorry I forgot all about this thread.

Like Scotty said Race-tech. Or MX-Texh, Pro-Action, RG3, are a few more companies.

ford832 · « **Reply #7 on:** August 03, 2010, 03:11:59 PM »

You should measure your sag before you order a new spring.If you're no heftier than 170 or so you may be ok and may just need to crank up the compression a little.
Have you ever measured sag,bike sag and extended before?

Charles Owens · « **Reply #8 on:** August 03, 2010, 05:51:09 PM »

Motosport.com has Factory Connection springs, $90ish for fork springs, $110ish for rear.

Braap257 · « **Reply #9 on:** August 03, 2010, 09:13:31 PM »

Ford, Yes I'm actually like 5'11 210lbs. and im workin on droppin about 15lbs. And no, Never measured the sag. How is it done?

ford832 · « **Reply #10 on:** August 04, 2010, 03:42:57 AM »

Just arrived at work >:(so I'll post it up later if someone else doesn't.Set close,even with your weight it won't be too bad.YZ's are quite tolerant.

Coop · « **Reply #11 on:** August 04, 2010, 04:41:13 AM »

Quote from: Braap257 on August 03, 2010, 09:13:31 PM

Ford, Yes I'm actually like 5'11 210lbs. and im workin on droppin about 15lbs. And no, Never measured the sag. How is it done?

Here ya go:

http://www.procircuit.com/installation_instructions/Setting%20the%20Sag.pdf

Braap257 · « **Reply #12 on:** August 04, 2010, 05:55:18 AM »

Quote from: Coop on August 04, 2010, 04:41:13 AM

Quote from: Braap257 on August 03, 2010, 09:13:31 PM
Ford, Yes I'm actually like 5'11 210lbs. and im workin on droppin about 15lbs. And no, Never measured the sag. How is it done?

Here ya go:

http://www.procircuit.com/installation_instructions/Setting%20the%20Sag.pdf

Thanks Coop,

Coop · « **Reply #13 on:** August 04, 2010, 06:01:05 AM »

No problem. That's a good article, the procedure is the same for your YZ.

ford832 · « **Reply #14 on:** August 04, 2010, 01:15:50 PM »

My apologies if clicker settings are covered in Coops links but I didn't look.Living in the boonies means I can ride from my back door-it also means I can't get high speed.Anyhoo,once you set the sag it's critical you set the clickers properly.I assume you have an owners manual?Someone before you may have adjusted them and have them way off.Yamaha's recommended settings are pretty darned close.My bro in law was about your weight and eventually went to a stiffer spring-BUT-for two years he rode stock and it worked very well.

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