IntroductionA coilover is an automobile suspension device. Thanks to built-in adjustability, coilovers offer the ability to be shortened or lengthened - lowering or raising the ride height of your vehicle through manual adjustment, without complex electronics or hydraulics. A coilover kit consists of a damper and a shock absorber with a coil spring around it. Maxpeedingrods provides performance aftermarket height adjustable coilovers suspension kit compatible for Mazda series. You can enjoy a comfortable riding experience in all road conditions.ApplicationCompatible for Mazda RX-8 2004-2011 All ModelsSpecificationQuantity:2 piece front + 2 pieces rear 2 Stainless Steel WrenchesTop mounts: Front pillow ball top mountSpring rate Front:10kg/mm (560 lbs/in)Spring rate Rear: 6kg/mm (336 lbs/in)Adjustable damper: Non Adjustable DamperShock type: Twin tubeAdjustable height : Yes，lowering 1\'\' to 3\'\'Adjustable camber plate : NoSpring preload: 7-10 mmCondition: 100% brand newWarranty: one year warranty for any manufacturing defectAccessories: You will get exactly as shown in the picture aboveFeatures* Adjustable ride height* Adjustable pre-load spring tension* Pillow ball top mount -- this design helps combat noise while tuning. It also improves the steering feel and response* Most components are made from 6061 aluminum with T6 for increased hardness -- the advantages include excellent strength, and aluminum helps keep the weight down.* Hi Tensile performance spring - Under 600,000 times continuously test, the spring distortion is less than 0.04%. Plus, the special surface treatment is to improve the durability and performance.* All inserts come with fitted rubber boots to protect the damper and keep clean.* Improve your handling performance without sacrifice comfortable ride.* A fast and affordable way to easily upgrade your car\'s appearance.* Easy installation with right tools.* Ideal for any track, drift and fast road and can also be used for daily driving.Notice- No instruction included; Professional installationalignment 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.