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Old 07-16-2019, 12:25 PM   #1
Rabbit Farmer
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Default Proflex coilover springs... how to read the numbers

Searching the entire internet has yielded very little.

Does anyone know how to read the numbers on Proflex coilover springs?

Front: Proflex 26-420
Rear: 30-60 TDI

I found on a motorcycle website (and a different spring manufacturer), that the first number is rate in N/meters and second is length in MM. That doesn't work... reversing it makes sense on the fronts (420 N/M = 310 ft/#) and the length could work if CM (26 CM = 10 inch). But... none of that works for the rear springs.

Thank you
Steve
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Last edited by Rabbit Farmer; 07-16-2019 at 01:36 PM.
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Old 07-23-2019, 01:29 AM   #2
Rabbit Farmer
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One response I got was "26KG" and "420 is the length"

Which could make sense if 26 KB per CM (vs. pounds per inch) and 420mm.

Still unsure about rear springs.
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Old 07-23-2019, 01:24 PM   #3
AndyRoo
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You can measure the length of spring yourself. That could help you figure out one of the numbers at least.
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Old 07-23-2019, 02:48 PM   #4
Rabbit Farmer
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Quote:
Originally Posted by AndyRoo View Post
You can measure the length of spring yourself. That could help you figure out one of the numbers at least.
That is true, but I donít want to inconvenience the owner too much ad he has it in storage.
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