Fitment For Scion TC 2011-2016 AGT20 For Toyota Zelas 2011-2016 Features 1. Self-design structure and new manufacturing system to give more customers good coil-overs without breaking the bank. 2. Full-length height adjustable—lower your car 1-3 inches (depending on vehicle models) to get a performance ride 3. Independent Ride Height and Spring Pre-load Adjustments 4. Twin-Tube System for Comfortable Ride on Streets 5. Coated finish to avoid rust 6. Heavy Duty Steel Lower Mounts 7. Simple install,  easy to adjust. Specification – Spring Rate Front: 8kg/mm(448 lbs/in) – Spring Rate Rear: 8kg/mm (448 lbs/in) – Spring length Front: 180mm – Spring length Rear: 183mm – Adjustable height: lowering 1-3inch – Coilover overall length Front: 500-590mm – Coilover overall length Rear: 550-650mm Package included 2x front coil-overs 2x rear  coil-overs 1x Allen wrench 2x C spanners Notes 1. All modifications must be installed by licensed mechanics and in compliance with your local modification regulations. 2. Please ensure all components are tightened with correct torque specifications (which can be found in the vehicle service manual)before and after installation. Any loose nuts, bolts, or locks will cause noise. Do check and tighten before serious problems happen. 3. Impact wrench is prohibited during the installation, it will loosen or damage the product. 4. Examine the clearance between tires and suspension. ( The minimum clearance should be 4mm, otherwise, you need to add wheel spacers. Caution: It is not sufficient with torsion beam trailing arm axles) 5. We suggest regular maintenance for the coil-over, spray with some WD40 every 3-4 months will keep it smooth and clean, which helps to extend the lifetime. Assembled Product Dimensions (L x W x H): 24.00 x 20.00 x 8.00 Inches