Bilstein B12 Pro-Kit DampTronic Shock & Spring Kit 46-331557 for BMW

Bilstein B12 DampTronic Shock and Spring Package for BMW F20 F21 F22 F23

Part number: 46-331557

Give your BMW 1 Series or 2 Series the fast road composure it deserves with the Bilstein B12 DampTronic package. This matched sport damper and lowering spring set is built for the F-series chassis listed below, delivering crisp steering, tighter body control and a purposeful ride height without sacrificing everyday comfort. It is the straightforward way to achieve a genuine handling upgrade with OEM-level integration.

We run B12 kits on our own cars and have installed them for countless customers. Feedback is consistently positive for ride quality, confidence in corners and real-world performance on British roads.

What makes it a standout upgrade

• Designed for BMW F20, F21, F22 and F23 platforms including M135i, M140i, M235i, M240i and 225d
• DampTronic compatibility for cars equipped with BMW electronic damping, retaining factory-style functionality where fitted
• Lower, flatter stance with a meaningful drop of up to 50 mm depending on model and spec
• Sport-tuned shock absorbers paired with performance springs for sharper turn-in and improved traction
• Gas-pressure damper technology for consistent, fade-resistant control on B-roads and motorway commutes
• Direct replacement components for a neat, bolt-on install that feels factory-fresh

The drive you can expect

• More grip and stability through fast direction changes
• Reduced roll and pitch for a planted, composed feel
• Comfort that remains civil for daily use while feeling genuinely sporty when pushed
• A balanced stance that complements OEM and aftermarket wheel setups

Vehicle coverage

• BMW 1 Series F20, F21
  • M135i, M140i, 125d
• BMW 2 Series F22 Coupe, F23 Convertible
  • M235i, M240i, 225d, 220i, 228i, 230i

Note: Ride height reduction varies with engine, drivetrain and factory equipment. Always verify compatibility for your exact model.

Key details

• Configuration: Performance shock absorbers with matched lowering springs
• Damper technology: Gas pressure
• Lowering range: Up to 50 mm depending on vehicle specification
• Manufacturer: Bilstein
• Part number: 46-331557
• EAN: 4025258893439

Fitment confirmation

We will check fitment before dispatch. Add your UK registration or last 7 of your VIN at checkout so we can confirm this Bilstein B12 DampTronic set, part number 46-331557, is right for your car.

Professional installation

Want it installed properly the first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Why enthusiasts choose this setup

• Proven on our own builds and customer cars with excellent long-term reliability
• Retains the refined character of the BMW chassis while adding serious pace on a back road
• Ideal for fast road use, track taster days and daily driving

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