BC RACING 1 SERIES M140i F20/F21 ER SERIES COILOVER 3 BOLT TOP MOUNT

BC Racing’s ER Series coilovers are the premium choice for F20 1 Series owners who want serious performance with precise control over damping.

The ER Series adds external reservoirs and independent compression and rebound adjustment, allowing you to fine-tune the chassis for fast road, track days, or dedicated circuit use. The increased oil capacity helps maintain consistent damping during extended hard driving.

If you would like to modify spring rates, please select the option and we will contact you to discuss your preferred setup. Kits may be in stock or built to order depending on specification and demand.