The Godspeed Project MAXX coilover for Honda Civic Si (FC) is for the tuners that want a track oriented setup that also provides daily commute comfort. With 40 levels of damping valve adjustment, you can easily adjust from stiff to soft simply by twisting the knob. Featuring mono-tube design with large capacity 52 mm dia. JIS seamless carbon steel shock body filled with IP F.A. 5W damper oil with properly valved 44 mm internal pistons to endurance competitiveness on a track course or daily spirited driving on public road. Cold wound springs are made from high tensile SAE9252 steel to ensure durability. Vehicle ride heights are adjusted with lower brackets to offer maximum shock travel in order to provide comfort compared to lowering springs alone. Mostly billet aluminum hardware accessories are used for its weight saving property in order to reduced overall weight of the coil-over system yet remain durable. All parts are replaceable and most importantly shock absorbers can be rebuild for customization or simply purchase replacement cartridge without spending too much for complete new coil-over system. You will experience quicker response times, improved bump absorption and increase grip to increase the safety when pushing your car to the limit!