ApplicationCompatible for 2005-2010 Chrysler 300C Compatible for 2008-2010 Dodge Challenger & Challenger SRT8Compatible for 2006-2010 Dodge Charger SRT8 Compatible for 2005-2008 Dodge MagnumSpecificationDaily driver, occasional autocross day or occasional track daysTop mounts: front - pillow ball top mountsrear - rubber top mountsProduct included: complete coilovers 2 front and 2 rear/ a pair wrench for height adjustment Adjustable damper: Non adjustable damper forceAdjustable camber plate: NoSpring rate: Front:12 kg/mm (672 lbs/in);Rear:14 kg/mm (784 lbs/in)Adjustable height: Yes, lowering 1'' to 3''Shock type:Twin tubeSpring Preload: 7-10 mmColor:GoldenWarranty: 1 yearFeature- Adjustable ride height.- Adjustable pre-load spring tension.- 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 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.