Progress Tech Competition Series Coil - over system for popular late - model (8th Gen) Honda Civic applications, 2006 - 11 including Si models. Eighth - Generation Honda Civic enthusiasts can now enjoy the experience and refinement that the expert tuners at Progress bring to the market with their advanced suspension systems. The new Progress Tech coil - over system is the result of thousands of miles of development and testing. The coil - over system is height - adjustable from 20 - 50 mm lower than OEM. This system has been developed for aggressive high - performance and weekend autocross enthusiasts. The handling capability has been improved substantially over the OEM calibrations, and the new system offers up razor - sharp steering and turn - in, awesome steady - state grip and easy - to - drive tracking for effortless highway miles.