Tein Street Advance Z Coilovers, 2002 2007 WRX & 2004 STi Tein Flex Z Coilover Kit 2002 2007 Subaru WRX, 2004 STI, 2005 2007 Saab 9 2X VSS28 C1SA4 Tein 16 Way Flex Z Coilovers Subaru WRX (2002 2007 Tein Control Master Type Flex Coilovers For Subaru Impreza WRX 2002 2007. Flex Z inherits all the features and quality of Street Flex but the adoption of a new platform allows its price to be set at amazingly low range for your 2002 2007 Subaru WRX, 2004 STI, 2005 2007 Saab 9 2X. Flex Z, of course, maintains the long favored "Made in Yokohama" quality. Ride height adjustable shock absorber, fully loaded with Tein's comprehensive technology, is now more affordable prices than ever. Specifications; Full length ride height adjustment feature Twin tube structure Damping force adjustment system Complete kit with upper mount Ride height adjustment with little or no change in ride quality For low resiliency & securing sufficient stroke 16 level linear damping force adjustment system Exclusively designed upper mounts are included (except some models) Complete suspension kit of 4 shock absorbers & 4 springs EDFC Compatible. Sold Separately. Note Coilover image may not be for your specific vehicle.