Bilstein B12 Pro Kit Spring & Damper Kit for BMW 3 Series F30 & 4 Series F32 (2011-2018) 325d 335i 430d 435i 440i - Performance Suspension Upgrade Lowering Shock Absorbers & Springs, Sport Strut Package, Coilover Alternative - 46-223678

Bilstein B12 Pro Kit - BMW 3 Series F30 and 4 Series F32 handling package for 335i, 435i, 440i | Part No. 46-223678

Transform the way your BMW steers, rides and looks with the Bilstein B12 Pro Kit. This matched spring and damper package delivers a confident drop in ride height, crisper response and real-world comfort on British roads. If you want sharper turn-in, less roll through corners and a purposeful stance without going to height-adjustable units, this is the fixed-rate sport setup that hits the sweet spot.

Perfect for fast-road use, the B12 Pro Kit provides a composed, planted feel at speed while keeping daily drivability intact. Expect a meaningful improvement in chassis control and stability with a tasteful lowering of up to 50 mm depending on application, retaining sensible ground clearance for everyday use.

What you will feel

• Cleaner, more precise steering with a tighter front end and improved feedback
• Reduced pitch and roll for better balance through bends and quicker direction changes
• Sporty ride height and even arch gap for an OEM plus look
• Direct-fit replacement components that work with factory mounting points
• Fast-road confidence without the compromise of crashy ride quality

We have installed this kit on a number of customer F30 and F32 cars and the response has been consistently positive. Owners comment on the immediate improvement in composure, the predictable grip and the tidy stance. It is a brilliant alternative to threaded-body kits if you want a well-judged drop and genuine performance gains.

Fitment

• BMW 3 Series F30, 2011 to 2018
  • 325d, 335i
• BMW 4 Series F32, 2012 to 2018
  • 430d, 435i, 440i

Part number

46-223678

Manufacturer

Bilstein

Warranty

2 Year Bilstein Warranty

Professional installation

For fitting, geometry and setup, book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote, availability and advice.

Search-friendly highlights

• BMW 3 Series F30 suspension kit, BMW 4 Series F32 spring and shock package, sport shocks and springs
• 335i 435i 440i handling upgrade, uprated dampers and lowering springs, fast-road suspension
• Fixed-rate sport suspension, ride height reduction up to 50 mm depending on model, daily-driver friendly
• Direct replacement struts and shocks, improved cornering stability, better turn-in and traction
• BMW F30 F32 stance kit, performance shock absorbers and spring set, chassis upgrade UK

Keywords: BMW F30 sport shocks, F32 shock and spring kit, 3 Series handling pack, 4 Series lowering springs and dampers, 335i suspension package UK, 435i performance suspension, 440i shock upgrade, BMW F30 ride height drop, BMW F32 suspension refresh, fixed-rate sports suspension, fast road setup, coilover alternative package, direct-fit sport dampers, BMW 3 Series F30 chassis upgrade, BMW 4 Series F32 coupe suspension kit.