These Progress Scion xB Series I coil-over kits are the perfect balance for the performance minded enthusiast looking to make huge improvements in handling and appearance where quality, durability, and proven track performance is of the utmost value. The aggressive tuning is ideal for superior street performance and autocross applications. Our exclusive take-apart dampers are tunable and rebuild-able; in addition, the threaded steel bodies are plated with attractive corrosion-resistant electroless nickel. This kit will get you the ride height adjustments you are looking for whether on the track or at the show. These kits are covered under a one year warranty to protect you from any manufacturing defects or parts failure; must keep original invoice and one year starts at the date of