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      12-09-2022, 06:41 PM   #2
CTMP4me
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Drives: '08 Z4MC, '71 240Z with S54
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Quote:
Originally Posted by dre99gsx View Post
I'm looking at some springs but most are 2.5" ID (Hyperco, swift, etc). I know BC has Swift in 62mm, but the rates I need are not in stock.

Has anyone run the 2.5" ID springs on KW shocks (or any shock that is made for a 62mm ID spring) without issues on the track?

I have tried a set I have laying around for fit, and it feels looser than I would be comfortable with.
How tight are the tolerances on the original KW springs? From experience, 60mm springs measure ~1-1.5mm over and perches/couplers are ~0-0.5mm under. 2.5" ID is nominally 63.5, not that far away from 62mm all things considered. Your spring perches should have enough room for either. Going with a "62mm" odd size spring might also limit what you can get for a helper spring setup.
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