Description
The BC Racing ZR coilovers for BMW 3 Series E46 offer three independently adjustable damping circuits: low-speed compression, high-speed compression and rebound. They use a linear twin-piston system and an inverted monotube design depending on configuration.
Low-speed compression offers 15 to 20 positions depending on the version, high-speed compression 12 positions and rebound 30 positions. External reservoirs provide compression adjustment with increased oil capacity and improved heat dissipation. Swift springs are included as standard and their rates are customisable. Ride height remains independent 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.
