COILOVERS ER / BC RACING / BMW 4 SERIES

BC Racing ER Coilovers for BMW Series 4

The BC Racing ER coilovers are new high-performance suspension designed to improve the dynamic behaviour of your BMW Series 4, both for sporty road driving and intensive circuit use. This ER range stands out for its 2-way adjustment with separate reservoirs, offering greater precision in damping adjustment.

Purpose of the part

Coilovers replace the original shock absorbers and springs to allow precise adjustment of ride height, damping stiffness and chassis behaviour. In the BC Racing ER range, the separate-reservoir system improves hydraulic stability, limits oil heating and allows independent adjustment of compression and rebound.

Symptoms or consequences of worn or unsuitable suspension

• Less precise handling during sporty driving
• Excessive body roll when cornering
• Loss of traction under acceleration or braking
• Uneven damping on rough roads
• Sagging suspension or uncontrolled ride height
• Unstable behaviour during rapid changes of direction

Benefits of replacement

• Improved driving precision and chassis feel
• Independent compression and rebound adjustment for fine tuning
• Height adjustment to optimise the centre of gravity
• Better stability during sporty driving and on the circuit
• Reduced body roll and body movements
• Separate reservoirs promoting more consistent performance
• Solution suited to demanding chassis preparation

Specifications

• Brand: BC Racing
• Product: ER coilovers
• Condition: new product
• Application: BMW Series 4
• Adjustment: 2-way with separate reservoirs
• Compression and rebound adjustment
• Adjustable ride height
• Design focused on road and circuit performance
• Spring rate expressed in the order: Front / Rear
• Product intended to improve vehicle dynamic behaviour

Vehicle compatibility

• BMW Series 4
• Compatibility must be checked against generation, body style, engine and transmission type
• Suitable for configurations requiring high-performance adjustable suspension

The BC Racing ER coilovers for BMW Series 4 provide an ideal solution for drivers seeking precise adjustment, better chassis effectiveness and controlled sporty behaviour.