with flex, the ride is firmer and stiffer. spring rate os SS is 8/4 and flex is 10/6.
Mono FLex is actually classify as Street Coil instead of Race Coil but people said they are too stiff for street use especially my area =(
Well, i know nth since I have tried on Flex myself but JDMyard 's word should be right since they are pro and i told z10 I am not going to buy from them this time since I am heading HK for holiday yooo![]()



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