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Old 11-11-2017, 10:39 PM   #1
MatBirch
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Default Progressive shock with a straight rate spring?

Progressive has made their place in the market with the “progressive” theory. I outweigh the theory. I have a spring on my stocker that is correct for me. I see used Progressive units come up for sale often at pretty good prices. Do they really have some super secret internals that would prevent them from working well with a stiff straight rate spring? It should be good improvement over the stocker...

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Old 11-12-2017, 07:43 AM   #2
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Default Re: Progressive shock with a straight rate spring?

Nothing super secret about a Progressive brand shock. They are built to a price point to service an average range of rider weights.

Progressives spec sheet (down loadable off their site) shows the 465 series shock for the KLR as having a rate of 500/560 lbs/inch. I'm guessing that is a progressive rate vice dual rate.

As long as any shock is valved appropriately for the rate of spring, it will work. So, if your spring is the correct length and has a rate within the valving of the Progressive shock, it should work.

I think you need to get a hold of Progressive and ask them if the shock you are considering is valved appropriately for your spring and your wieght.
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Old 11-14-2017, 12:15 PM   #3
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Default Re: Progressive shock with a straight rate spring?

There is "progressive" the spring and "Progressive" the brand. Not all progressive springs are made by Progressive and not all springs used by Progressive are progressive springs.

I agree with R/L thoguh I'm not sure that Progressive shocks like the 465 actually use a progressive spring, but no, there is no magic inside that would preclude them from being used with a stiffer straight rate spring.

Your plan would work, though a stiffer spring than the shock is designed for can cause "pogo-ing" due to inadequate damping......yes, still better than stock though. Not as good as a good shock (ie. a Cogent Moab) with the springrate and damping set up for you.


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Dave
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