Join Date: Apr 2012
Location: Calgary, Canada
Thanked 812 Times in 496 Posts
First you determine what spring you want to use. Say, for ease, you use the stock spring. Rider sag for this bike is in the 30 - 35 mm range for road riding. Which is to say, when you get on your bike, the forks should compress by 30 - 35 mm. I think that the rider sag on the stock forks, with an allowance for differing rider weights, is about 50mm +/-. This means you need to change out the preload spacer, that is in the forks, for ones that are at least 20mm longer to get you into the ballpark. The stock preload spacers are about 102mm so I would say start with new spacers cut to 130mm. Put them in and then check your rider sag. If the bike drops more than 30-35mm, with you on it, you need to add that difference to new spacers. If the bike drops less than 30-35mm, you need to subtract that difference from the spacers.
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Last edited by Jme250RA; 11-09-2012 at 03:54 PM.