TEIN has designed a high quality coilover that includes everything you will need for a direct install at an affordable price. The TEIN Flex Z Coilover has a twin-tube design which is full height adjustable with a 16-level Linear Damping Force Adjustment System that will not change the ride quality of your 2002-2007 WRX/STI. The Flex Z comes with all the bells and whistles which means it is compatible with TEIN's EDFC controllers for even greater handling control from within the vehicle.
Unlike other TEIN Coilover models, the Flex Z comes out of box with complete upper mount kits for easy installation. When designing the Flex Z coilovers, TEIN took all aspects of durability to mind and coated each coilover with Rust-Proofing, highly rigid brackets and shell casing and added high-spec damper oil. If height adjustment and superior ride quality at an affordable price is what you are looking to add to the 2002-2007 WRX/STI then the Flex Z coilover is a no-brainer!