The AST 2021+ BMW M3 G80 / M4 G82 5300 Series Coilovers are adjustable height and dampening suspension coilovers that provide improved handling and performance for the BMW M3 and M4 models. These coilovers feature a monotube design with a 46mm piston diameter, a 5300 series shock absorber, and a high-performance spring rate. They are adjustable from 0-3 of lowering and feature a 12-way adjustable dampening range. With these coilovers, you can easily adjust the ride height and dampening to your desired settings, allowing for a custom tailored suspension setup for your BMW M3 or M4.