Bilstein B12 Pro-Kit Street Suspension Kit 46-276223 for BMW 4 Series F33 Convertible Cabrio & M4 F83 Convertible (incl. M4 Competition) - B8 Shocks/Struts + Eibach Pro-Kit Lowering Springs - 10-30mm Drop, Coilover Alternative

Bilstein B12 Street Performance Kit for BMW F33 and F83 M4 Convertible 46-276223

Transform the way your cabriolet drives and sits with this proven shock and spring package. The Bilstein B12 set combines B8 short-body dampers with Eibach Pro-Kit sport springs to deliver a tasteful ride height drop of around 10 to 30 mm, sharper steering feel and rock-solid high-speed stability. If you want a fast-road handling upgrade for a BMW 4 Series Convertible F33 or BMW M4 Convertible F83, including the M4 Competition, this is the bolt-on solution that works on British roads.

We have installed this kit in-house and customer feedback has been superb. Expect crisper turn-in, noticeably less body roll and a composed ride that still copes with daily use. The stance is spot on, the control is confidence-inspiring and the quality is exactly what you would expect from German engineering.

Why this sport suspension package stands out

• Matched components for the BMW platform for balanced handling and consistency front to rear.
• Ride height reduction of approximately 10 to 30 mm for a lower centre of gravity and cleaner aesthetics.
• B8 performance shock absorbers for precise damping control and excellent road contact.
• Eibach progressive sport springs for comfort on uneven tarmac and control during spirited driving.
• Gas pressure monotube technology for fade resistance and repeatable performance.
• TÜV approved for quality and safety reassurance.

What is included

• 2 x front B8 struts and 2 x rear B8 dampers.
• Front and rear Eibach Pro-Kit springs.
• Direct replacement hardware designed specifically for the listed BMW applications.

Vehicle applications

• BMW 4 Series F33 Convertible
• BMW M4 F83 Convertible
• BMW M4 F83 Competition Convertible

Ride height and handling feel

Expect a neat drop within the 10 to 30 mm window depending on model. The lowered stance reduces pitch and roll, improves traction out of corners and enhances braking stability without the harshness you often get from budget lowering springs. Ideal for fast road driving and B-road blasts.

Technical highlights

• Shortened B8 dampers to suit lowering springs for optimal stroke.
• Progressive spring rates for everyday comfort with firm control when pushed.
• Monotube construction on select fitments for high damper rigidity and feedback.
• OE-quality fitment with plug-and-play installation.

Installation and setup

Professional fitting and a four-wheel alignment are strongly recommended to maximise tyre wear and geometry. For expert installation, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Fitment verification before dispatch

We will confirm compatibility prior to shipping. Provide your UK registration or the last seven characters of your VIN at checkout so we can double-check the correct kit for your car.

Part numbers and identifiers

Bilstein Part Number: 46-276223

EAN: 4025258807412

UPC: 651860811529

Search-friendly terms

BMW F33 cabrio lowering suspension, BMW F83 M4 cabrio suspension package, M4 Competition sport shocks and springs, Bilstein B8 shock absorber kit for BMW convertible, Eibach Pro Kit spring set for F33 and F83, BMW 4 Series convertible handling upgrade, fast road chassis kit, ride height drop 10mm 20mm 30mm, direct bolt-on sport suspension, uprated dampers and sport springs, monotube gas pressure shocks, TÜV approved suspension for BMW, fixed-rate alternative to coilovers, OEM plus ride and handling.

Order with confidence for a genuine improvement in grip, control and stance on UK roads.