The Progress Tech CS2 coil-over system for 1989–1991 Honda Civic, Si and CRX applications is a non-adjustable twin-tube low-pressure gas suspension kit for street and occasional track work. It installs with factory top hats and uses a 350 lb/in front spring and a 450 lb/in rear, providing a 1"–3" lowering range to sharpen handling and improve balance while staying cost-conscious.
Progress Tech 89-91 Honda Civic/Si/CRX Coil-Over 2 System (FR 350lb / RR 450lb) Factory Top Hat Only