Godspeed(MRS1560-A MonoRS Coilovers, Honda Civic Si 2012-13, Fully Adjustable, Set of 4 Fits 2012, 2013 Honda Civic(FG/FB) Si Models;Front: 8 kg/mm, Rear: 10 kg/mm 52mm Mono-Tube Stainless Steel Shock With 32 Levels of Damping Adjustment Corresponds to Daily Driving Scene To The Sunday Track Performance Internal Piston With Koyo Japan 6204z Bearing Provides Smooth Stroke; Powder Coated CNC Machined Aluminum And Carbon Steel Accessories Independent Spring Tension And Height Adjustment; Racing Grade Shock Oil With High Viscosity Index; Shock Absorber Can Be Replace Or Rebuild When Worn Out Full 1 Year Limited Warranty From Date Of Purchase; Install By Experienced Professional Is Highly Recommended