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2010 yz450 spring rate

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Hi there I have a 2010 yz450, I weigh 138 pounds no gear and have bout 117mm race sag and 35mm static sag, not sure what spring rates I have front and rear maybe stock , I'm a average trail / mx but want to do a bit more mx, what is a good base setup for my quoted measurements , thanks.

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Your race(static)sag seems high. It should be 100-105. The spring needs more preload. The stock springs for the bike are actually probably on the stiff side for your weight. Are you sure the springs are stock.

Stock is 0.47 kg/mm up front 5.7 kg/mm rear. Ideally you would want around .44 kg/mm front 5.2 - 5.4 rear.

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