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Odd spring size's in forks

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I was thinking about changing the size of my springs in my forks on a 2008 crf450r and i was thinking about putting one heavy duty spring in and one light spring to try and get a better result , my question is would it damage anything ?

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It is commonly done, but it's done in order to arrive at an average spring rate that's otherwise not available. Say you've decided you want a .45 kg/mm rate, but only .46's and .44's can be had. Using one of each will get you the .45 you were looking for.

What mixing springs won't do is give you the characteristics of both a light spring and a heavy spring at the same time, which I have heard one or two people suggest before they thought it through. It simply behaves as the sum of the two rates. I know that seems obvious, but....

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Pat66, I have done this to my 250x. It actually works great. I put a 450r spring in my 250x. Just make sure the heavier spring is on the brake side.

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