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I'm curious as to how the Flex Z coilivers compare to the Street Advance coilovers. How do the damping, valving and spring rates differ between the two? And are both systems using progressive rate springs?
Aggressive lowering I am not so much interested in personally. It's more how the system balances handling and ride comfort.
The older Flex systems from a decade ago I am familiar with from word of mouth. Is the Flex Z a complete redesign?