Question about Yamaha YZ 250 Motorcycles

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What psi should the nitrogen shock be on a 2005 yz 250

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I THANK THAT THE SHOCK CARRIES 175 PSI YOU CAN GO TO RACETECH.COM AND LOOK UP THE PRESSURE BY YEAR AND TYPE BIKE

Posted on Oct 02, 2009

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142psi buddy

Posted on Sep 27, 2009

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Yz125 rear shock amount of oil on


The volume is less than about 1/2 quart - it's usually not measured going in since you fill the shock completely - there's no need to measure. Some guys assemble the entire shock, then fill with oil and cycle the shaft, then install the bladder cap last. My method is to install the shaft and seal head and the bladder, then put about 2 PSI in the bladder, then bleed through the compression cap. My method is a bit more complicated to explain, but it's effective at eliminating ALL the air from the oil and it keeps the bladder from being installed in a collapsed state.

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Apr 30, 2010 | 2004 Yamaha YZ 125

2 Answers

All spring no shock


Your rear shock has oil in it that is a measured amount. But...also has a nitrogen charge. If this leaks out, you need to get the rear shock rebuilt.

Sep 01, 2009 | 2003 Yamaha YZ 250

1 Answer

My YZ 250 F rear shock absorber fluid and nitro amount


there is no quantity that i can give you.....you have to fill that thing completely and make sure you have no air at all in it...maybe you can see this important step on you tube....otherwise the pressure of nitrogen is between 150-175 lbs depending on the way you like you're bike to absorb..make sur you place you're valving shim in right place if you change you seal....

May 09, 2009 | 2004 Yamaha YZ 250 F

1 Answer

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Nitrogen is used for it's high pressure and lack of moisture,Air will work,but you can only get about 125psi and alot of moisture and 125psi will not be enough pressure.

Mar 17, 2009 | 2003 Yamaha YZ 250

2 Answers

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You can change it. Im looking for the correct amount to do it myself. I already pulled mine apart and bought a rebuild kit for it. Comes with a new nitrogen bladder, o rings for the seal, and a few other necessary items. Just remember to measure where the jam nuts holding your spring is so you can put it back in the correct location. As for the nitrogen i heard 150 psi. I'm fortunate to work at an offroad racing shop so i'm just gonna fill mine with nitrogen there, but i dont think you should get charged too much at a regular bike shop. Rockymountainatv.com has the rebuild kit. You will need the seals atleast. If i find anything else out i'll let you know. Hope this helps.

Mar 15, 2009 | 2003 Yamaha YZ 250

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