ILLUMINA ADJUSTABLE SUSPENSION KIT, SOLD AS A COMPLETE KIT, 2 FRONTS, 2 REARS -- 1.75" Front Drop, 1.75" Rear Drop, INCLUDES SPRINGS, Engineered As A Tuning Device For Enthusiasts Who Require Great Performance For Street, Track, And Regular Driving, Offers Five Settings, From #1 For Regular Driving To #5 For Maximum Control And Externally Adjusts Both Rebound And Compression Damping With The Turn Of A Screwdriver At The Stem Top, Spring Rates And Proper Ride Height Matched To Ensure Correct Fit And Function, Lowering Springs Are Chrome Silicone Spring Alloy, Heat Treated, Shot Peened, Block Set, Phosphate Treated And Powder Coated