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help setting up 05 yz125 for my gf.

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Hi my gf has a 05 yz125 and she rides xc with alot of roots, rocks and rougher single track. He weighs 140 and is a mid pack C class racer. I changed the rear spring to a slightly softer per race techs spring calculater it said the front was correct for her. Im having a hard time getting it set up for her though, I have it alot better from where I started with it though. Can any one give me some settings to start with? and what would a good sag measurement be? Thank you. And It has not been revalved, may do that this winter.

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The forks need a revalve to be decent in the woods. You'll also want to lower the oil level to around 220 to start off with. The stock springs of .42 aren't correct for a 140lb novice, she would need closer to .40.

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Im going to go over the bike and write down all the settings in the next day or two and Ill post them on here.

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Ok just got a chance to gett all the settings. All my numbers are clicks from fully turned in. FRorks are 13 compression and 8 rebound. shock is 9 low speed, 1/2 turn high speed, and 12 rebound. Any place seem like it needs adjusted?

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Any place seem like it needs adjusted?

as it has MX suspension, you would never be comfortable on single tracks.

as kan3 said, it needs to be revalved

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you can try full soft on compression

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One of the best and most important thing you can do to the 05 yz fork is set the fork spring preload right ( stock it is -8mm prload , and you ned approx +8mm preload) and get rid of the stock metal band on the mid-valve piston and replace it with a teflon band.

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One of the best and most important thing you can do to the 05 yz fork is set the fork spring preload right ( stock it is -8mm prload , and you ned approx +8mm preload) and get rid of the stock metal band on the mid-valve piston and replace it with a teflon band.

How would I add preload? I have some washers that came with the fork springs on my rm is that what those are used for?

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PVC of the correct size will work fine. Personally, I found the rear shock rebound to be a little weak and had to stiffen it up quite a bit before I had it revalved.

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You got it, PVC cut squarely to the right lenth will do the trick , Yep the rebound stack is a bit light.

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and get rid of the stock metal band on the mid-valve piston and replace it with a teflon band.

Can you elaborate on this?

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The piston band on the mid valve piston isa metal band that has an outer teflon coating on it . This piston band has a huge gap in it and allows a large area of bleed in both directions . It needs to be upgraded .

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