The AST 12-15 BMW M3 F80/M4 F82 Pre LCI / 15-18 BMW M3 F80/M4 F82 LCI 5100 Street Series Coilovers are designed to provide superior performance and ride quality for BMW vehicles. These coilovers feature a monotube design with a 5100 series dampers for increased performance and stability. The adjustable ride height allows for a custom look and feel, while the adjustable damping feature allows for a tailored ride. The 5100 Street Series Coilovers provide superior cornering and handling, and are a great choice for those looking to improve the performance and handling of their BMW.