The BC Racing BR Series Coilover Kit (F13) - I-27BR is a performance suspension upgrade for vehicles. It includes a set of coilover shocks that can be adjusted to different heights and damping settings, allowing for a customizable ride experience. The kit is designed to improve handling, responsiveness, and overall performance of the vehicle. It is compatible with the F13 chassis and is made with high-quality materials for durability and longevity.