Cusco Coilovers - Street Zero A: The Cusco Street Zero A coilover system is great for the every day automotive enthusiast looking for a suspension kit that offers great street manners at an affordable price. This system features a unique 40-way dampening adjustment for a wide range of adjustability, and Pillowball upper mounts combined with individually designed bump stops provide a comfortable ride for any daily driver.spension for people who love to drive fast but still want comfort. Cusco Coilovers - Street Zero A: The Cusco Street Zero A coilover system is great for the every day automotive enthusiast looking for a suspension kit that offers great street manners at an affordable price. This system features a unique 40-way dampening adjustment for a wide range of adjustability, and Pillowball upper mounts combined with individually designed bump stops provide a comfortable ride for any daily driver. Each Cusco Zero A twin-tube shock absorber comes with high strength steel mounting brackets and a threaded case with preload adjustment lock nuts and lower seats to set a preferred ride height. Included dust boots help protect your suspension from premature wear due to road grime and dirt. * Includes upper mounts * Front Mount PB / Rear Mount Hard Rubber * 40-way adjustable * Twin tube shock absorber * Ride height adjustable Spring Rates Front - 7K Rear - 8K Height Adjustment Recommended: -30 to -10mm Front / -25 to -5mm Rear Maximum: -55 to 0mm Front / -25 to 0mm Rear Fits: 2015 WRX Cusco Street Zero-A Coilovers 2015 STI Cusco Street Zero-A Coilovers