Bilstein B12 Pro Kit for BMW 4 Series F33 Convertible 430d, 435i, 440i
Transform the way your BMW 4 Series F33 drives and looks with the Bilstein B12 Pro Kit suspension. This BMW F33 coilover-style performance suspension kit is engineered for fast, easy lowering and a sharper, more confident ride on the road. If you are searching for BMW F33 coilovers, BMW 4 Series F33 suspension upgrade, BMW 430d coilovers, BMW 435i coilovers or BMW 440i coilovers, this B12 kit delivers the stance, stability and everyday comfort enthusiasts want.
We have fitted this kit to customer BMW 4 Series F33 builds and the feedback has been brilliant. Improved handling, reduced body roll and a purposeful lowered stance without rubbing or scraping. It is the perfect sport suspension upgrade for street use with weekend blasts.
Why choose Bilstein B12 for your BMW F33
- Direct fit for BMW 4 Series F33 Convertible 430d, 435i, 440i – no hassle installation.
- Sporty, static lowering by up to 50 mm depending on application for that aggressive stance.
- Improved comfort and handling compared to factory suspension for real-world British roads.
- No rubbing and no pavement scraping thanks to correct spring compression height and motion ratio.
- Perfectly tuned drop for optimum road feel and looks with technical certification.
- Enhanced stability for long-haul comfort and confident fast-road performance.
- Street and track focused dynamics while remaining daily-drivable.
What the Bilstein B12 Pro Kit does
This performance suspension system combines matched dampers and sport springs to lower your BMW F33 while preserving proper suspension geometry and ground clearance. The result is sharper turn-in, better grip and a composed ride on B-roads and motorways. If you are comparing BMW F33 lowering springs, BMW F33 shocks, BMW F33 struts or full BMW 4 Series coilover kits, the Bilstein B12 Pro Kit is the smart, proven upgrade for a road-focused setup.
Compatibility
- BMW 4 Series F33 Convertible 2014–2018
- 430d
- 435i
- 440i
Part Number
46-258199
Manufacturer and Warranty
Manufactured by: Bilstein
Warranty: 2 Year Bilstein Warranty
Professional fitting and alignment
For the best results, have your Bilstein B12 Pro Kit supplied and fitted by suspension specialists. Nforcd offers professional installation and a precise geometry setup in Warwickshire. Request a fitting quote at Sales@nforcd.com.
SEO quick hits
Bilstein B12 Pro Kit BMW F33. BMW 4 Series F33 coilover kit. BMW 430d suspension upgrade. BMW 435i suspension kit. BMW 440i coilovers. BMW F33 lowering kit. Performance suspension for BMW F33 Convertible 2014–2018. Direct fit sport suspension. Static lowering up to 50 mm. Improved handling and comfort. Part number 46-258199.