I bought these sport springs along with Bilstein sport dampers for my Mazda MX-5. The old dampers were worn out which gave me an excuse for the upgrade. After changing out the springs / dampers I can really tell a difference. Right height lowered ~1" giving a little sportier look without being too low. Handling is also GREAT; the car stays totally planted in tight turns. Definitely one of the best upgrades I've done to date.