The BC Racing BR Series Coilover Kit (F13) - I-27BR is a suspension upgrade for vehicles that allows for adjustable ride height and damping. This kit includes 4 coilovers, each with 30 levels of damping adjustment, allowing for a customizable and comfortable ride. The coilovers are made with high quality materials and are designed for high performance driving. They also come with adjustable camber plates, allowing for improved handling and cornering. This kit is specifically designed for the F13 chassis and is a popular choice for enthusiasts looking to improve their vehicle's handling and appearance.