Application: for Audi A5 (8T/8F) 2007-2017 (8T3/8F7/8TA) Specification: Height adjustable: Front & Rear (depends on your vehicle) Front Lowering: 30-75mm Rear Lowering: 20-65mm Spring rate Front: 5 kg/mm (280 lbs/in) Spring rate Rear: 3 kg/mm (168 lbs/in) Spring length Front: 255 mm Spring length Rear: 255 mm Front spring inner diameter: 62-70 mm Rear spring inner diameter: 62-53 mm Spring Preload advised: 7-10 mm Top mounts: Front and rear OE top mounts required Damping : Not adjustable Package included: 2x Front coil-overs 2x Rear coil-overs 2x C spanners Feature: 1. Lower height adjustable (depends on vehicle models) 2. Dust boot, solid rubber bump stops 3. Weight Saving Aluminum Components And heavy duty Steel Lower Mount Brackets 4. Simple install, Easy to adjust. 5. Use the vehicle's original upper mounts (not included in our product kit). Note: 1. All modifications must be installed by licensed mechanics and in compliance with your local modification regulations. 2. Please