General description Performance Coilovers for Mazda 3 BL BK 2WD Mazdaspeed 3 MZR MPS are designed to enhance your vehicle's suspension system. These coilovers allow for adjustable height from 1" to 3", improving the center of gravity and providing a more aggressive stance. With 24 levels of rebound damping adjustment, you can fine-tune your suspension setup for optimal ride quality across various road conditions. Technical specifications Application: Mazda 3 BK 2004-2009, Mazda 3 BL 2009-2013 (Includes Mazdaspeed 3) Adjustable height: 1" to 3" Damping: 24 levels rebound damping adjustable Top mounts: Front pillow ball top mounts Shock type: Twin tube Spring preload: 7-10 mm Spring rate Front: 10 kg/mm (560 lbs/in) Spring rate Rear: 7 kg/mm (392 lbs/in) Package includes: 2x Front coil-overs, 2x Rear coil-overs, 2x C spanners Installation Complete suspension kit includes 4 shock absorbers and 4 springs for easy installation. Height can be adjusted with coilovers installed on the