Solo Werks S1 Coilover System - E39 5 Series - Premium Entry Level Coilover Suspension! Features: Heavy Gold Zinc Plated Housings for superb corrosion resistance Large 20mm Damper Shafts New Progressive elastomer bumpstops Black spring perches - double lock ring design Platform Specific Spring Rates and Matched Valving Front 40-80mm(1.6-3.1"") Lowering Range Rear 20-50mm (0.8-2.0") Lowering Range 3 year Limited Warranty Each Kit Contains: 2x Front threaded coilover dampers (w/ Dual locking ring spring perches) 2x Front Spring (Linear Rate) + 2x helper spring 2x Rear threaded coilover dampers (w/ Dual locking ring spring perches) 2x Rear Spring (Linear Rate) + 2x helper spring 2x Spanner wrenches Step by Step Installation Instructions 1oz. Bottle Boeshield T-9 Lubricant/Protection * A 5mm (min) front wheel spacer may be necessary depending on wheel size and offset INSTALLATION INSTRUCTIONS: Application / Fitments: BMW '97-'03 E39 Sedan All eng. Does Not Fit XI (AWD) Models DOES NOT FIT M5 or M SPORT EQUIPPED MODELS *Cars equipped with tall style upper strut mount must use OEM BMW upper strut mount #31336752735 to install properly. *All lowering ranges are approx. and will varying depending on mileage, condition, vehicle options.