K-Tuned K2-Circuit Coilovers 12-13 Honda Civic Si / 12-15 Base Honda Civic (9th Gen) - 14K front and 12K rear springs (w/ DS1 Valve)

Item SKU: KTD-K21-FG4-F14K/R12K-DS1

K-Tuned K2-Circuit coilovers for the 2012-2013 Honda Civic Si and 2012-2015 base non-Si Honda Civic, 9th gen chassis. This K2 Coilovers - Circuit kit uses 14K front springs, rated at 785 lb/in, and 12K rear springs, rated at 672 lb/in, with K-Tuned's DS1 valve setup.

• Spring rates: 14K front and 12K rear. These are the recommended rates supplied with this SKU for a track-focused Civic setup.
• DS1 valve: K-Tuned's hybrid damper valve blends characteristics of its Race and Digressive valves. It's intended for cars that still get driven to the track, while retaining the more controlled response expected from the K2-Circuit line.
• Damping and height adjustment: 32-way damping adjustment lets you work through settings for the surface and driving style. Ride height is adjustable, and the aluminum spring perches allow preload and travel adjustment.
• Strut hardware: Heat-treated steel pistons, needle valves, proprietary damper oil, and double seals make up the strut assembly. This stuff matters when the car sees repeated heat cycles and hard track use.
• Upper mounts: Pillow-ball upper mounts are included. Since this Civic uses McPherson struts, the front setup includes adjustable upper camber plates for alignment adjustment.

K2-Circuit is K-Tuned's race-oriented coilover range for circuit racing, time attack, and drag use, with stiffer rates and more aggressive valving than a street-focused setup. This version uses the K2-Circuit preset rebound arrangement rather than separate rebound and compression adjustment found on the K2 Pro-Circuit two-way line. The 14K/12K combination keeps the focus on body control, while the DS1 valve is the middle-ground option for a Civic that isn't trailered everywhere.

K-Tuned notes that rear installation may require light modification on this application, so it's worth checking the installation details before the car is apart. Spring rates can also be changed by up to 4K in either direction through K-Tuned if the supplied 14K front and 12K rear package isn't right for the build.