ApplicationCompatible for Mazda 3 BK 2004-2009Compatible for Mazda 3 BL 2009-2013( also compatible forMazdaspeed 3）SpecificationsQuantity: Complete coilovers 2 front and 2 rear as shown in the pictureAdjustable damper: NoAdjustable camber plate: NoAdjustable height: YesSpring rate front: 10 kg/mm (560 lbs/in)Spring rate rear: 7 kg/mm (392 lbs/in)Shock type: Twin tubeSpring preload: 7-10 mmColor: BlueWarranty: one year warranty for any manufacturing defectDaily Driving Scene To The Sunday TrackFeature- Able to lower ride height by 1\'\'-3\'\'; allows user to have a more aggressive stance.- The user can enjoy a comfortable riding experience in all road conditions.- Pillow ball top mount --- this design helps combat noise while tuning. It also improves the steering feel and response.- Twin-Tube Shock design is used for low internal frictional resistance in order to increase efficiency and keep shock temps low.- Height adjustment does not sacrifice damper stroke length.- These coilovers are able to have their height adjusted without being taken out of the car.- Most components of the suspension parts are made from 6061-T6 aluminum to increase strength and rigidity.- High Tensile strength performance spring---Tested under a 600,000 time continuous compression test, the spring distortion was less than 0.04%. Plus, the special surface treatment improves the durability and performance.- Adjustment tools included in the kit.NoticeNo instruction included; Professional installation alignment suggested.Please check our store for other auto parts you may be interested in.Please feel free to contact us for whatever we can help.