General description Coilovers Suspension Struts designed for Mazda 3 BK (2004-2009) and Mazda 3 BL (2009-2013), including Mazdaspeed 3. These coilovers offer adjustable height and damping for enhanced performance and comfort. Technical specifications Height adjustable: Yes, lowering 25-75mm depending on vehicle models Damping adjustable: 24 levels of rebound damping force Spring rate Front: 10 kg/mm (560 lbs/in) Spring rate Rear: 7 kg/mm (392 lbs/in) Front spring inner diameter: 70.5 mm Rear spring inner diameter: 65-87 mm Spring length Front: 200 mm Spring length Rear: 194 mm Front top mount: Pillow ball Rear top mount: Standard rubber Spring Preload advised: 7-10 mm Shock Type: Twin Tube Installation All modifications must be installed by licensed mechanics and in compliance with local modification regulations. Ensure all components are tightened with correct torque specifications before and after installation. Impact wrench is prohibited during installation to avoid loosening or