Description
The BC Racing HM coilovers for BMW 3 Series E90 combine an inverted monotube design, depending on suspension architecture, with two independently adjustable damping circuits. Compression and rebound each offer 30 positions.
The linear twin-piston system uses external reservoirs connected by braided hoses on suitable configurations. Increased oil capacity and improved heat dissipation complement a construction reinforced for high lateral loads. Swift springs are included as standard and their rates are customisable. Ride height adjusts independently of spring preload.
Swiss approval
All our BC Racing coilover kits are supplied with Swiss approval documentation (CH Gutachten), allowing installation and registration of the modifications on the vehicle registration document in accordance with Swiss regulations.
- Swiss approval documentation: included with all our BC Racing coilover kits.
- Permitted lowering: up to −40 mm from the vehicle’s original ride height, subject to the conditions in the approval document.
- Adjustable camber plates: additional FAKT documentation is supplied where required.
- Vehicle inspection: after installation, the vehicle must be presented to the cantonal vehicle licensing authority for approval of the modifications.
Important: some kits technically allow lowering beyond −40 mm. However, to comply with the Swiss approval, the vehicle must respect the limits and conditions stated in the supplied documents.
