The AST 5300 Series Coilovers for BMW 1 series - E8X are an adjustable suspension system designed to enhance the handling and performance of your BMW. This system allows for a wide range of adjustment to fine-tune the suspension to your individual driving style. With its adjustable spring pre-load, rebound, and dampening, you can easily adjust the ride height and cornering characteristics of your vehicle. The adjustable ride height allows for a wide range of lowering options, while the adjustable rebound and dampening help to provide a comfortable ride with improved handling. The AST 5300 Series Coilovers are perfect for any enthusiast looking to take their BMW 1 series - E8X to the next level.