These kits use 350# front and 250# rear springs. This calibration rides well on uneven road conditions if set up at a reasonable ride height around 1.0 in. to 1.5 in. less than OEM. Expect a dramatic improvement in handling capability and steering response. This is the choice for sport-tuned "daily drivers".
For the sake of comparison, typical OEM spring rates for these applications are approximately 220#/in front, and 110#/in rear. With the numerous Civic & Integra applications, there is a range of spring rates, and these CS-II systems are significant upgrades from your OEM damper and spring calibrations.
These new systems have been redesigned with improved shock dampening rates, modern foam-type bump stops, and less part content for a simple and durable sport suspension system. This is a perfect system for street performance, new track day and autocross entusiasts, as well as project cars with engine swaps.
**Progress coilovers are always custom made and take 3-8 weeks to get made and ship out.
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