BC RACING COILOVERS ER SERIES - BMW 3 SERIES F30 12-19 (RWD 3-BOLT TOP MOUNT) (TRUE REAR)The BC Racing ER Series is a high performance coilover system featuring external reservoirs and completely separate compression and rebound damping adjustment. It builds on the proven quality of the BR and DS Series but adds far greater tuning control, making the ER Series ideal for drivers who want more precise handling balance on fast road cars and track focused builds. Key Features Digressive piston and damping curve External reservoirs with 30

Utilizes a complete hardware kit with soft mounts for a guaranteed perfect fit

BMW – 4 Series – 420i – 2013 – 2020

gains of between 7-15bhp and a lot more torque are easily achieved

where as our enlarged replacement kit features a 60mm internal diameter from start to finish with no restrictions

Created from 3D scan and CAD software for perfect fitment

Wash carefully

Viscosity at 100 °C: 24

narrow gates and snappy centering making every driving experience an opportunity to put a smile on your face

You’ll benefit from improved power delivery and sharper response

For best results

7D Turbo are precision-built in-house

3 Sport (2003-2008) are precision-built in-house