Bilstein B12 Sportline Suspension Kit 46-180124 for BMW E46 3 Series Compact (325ti 318td 320td) Lowering Springs & Gas Shocks up to -50mm 2001-2005

Bilstein B12 Sportline P/N 46-180124 – BMW 3 Series Compact E46 Performance Spring and Damper Package

Give your E46 Compact the stance, grip and confidence it deserves with the Bilstein B12 Sportline kit, part number 46-180124. This complete spring and shock absorber package delivers a purposeful ride height reduction of up to 50 mm, sharper steering response and impressive body control, all while keeping day-to-day comfort fully intact. It is the fast-road upgrade our BMW customers ask for when they want dependable handling gains without the harshness of budget coilovers.

Engineered specifically for the BMW 3 Series Compact E46 hatchback, this bolt-on kit replaces tired OE components with precisely matched gas-charged dampers and sport springs for a cohesive, factory-quality feel. Expect flatter cornering, better traction out of bends, reduced pitch and dive and a planted, composed ride at motorway speeds. The look is lower and meaner, the drive is tighter and more controlled, and the quality is exactly what you would expect from Bilstein.

What you will feel

• Crisp turn-in and direct steering feedback on B-roads and dual carriageways
• Ride height reduction up to 50 mm for a more aggressive stance and lower centre of gravity
• Consistent damping from gas-charged shocks for confidence over rough surfaces
• Matched spring rates and damper valving tuned for fast-road use and daily driving
• OE-style fitment for straightforward installation and proper geometry

Real-world feedback

We have used this kit on customer cars and our own builds, and it delivers every time. Drivers report better mid-corner stability, more grip, improved confidence when braking hard and a noticeably smoother, more controlled ride over uneven tarmac. It is a brilliant alternative to height-adjustable kits if you want a set-and-forget sport suspension with road-friendly comfort.

Vehicle fitment

BMW 3 Series Compact E46, model years 2001 to 2005, including:

• 325ti petrol
• 318td diesel
• 320td diesel

Highlights and specifications

• Type: Sport spring and gas-charged damper set
• Lowering: up to 50 mm depending on vehicle specification
• Direct replacement, no fabrication required
• Supplied with manufacturer documentation

What is in the box

A matched set of Bilstein gas-charged shock absorbers and performance sport springs tailored for the BMW E46 Compact platform.

Part numbers

• Part number: 46-180124
• EAN: 4025258673512
• UPC: 651860671918
• Brand: Bilstein

Fitment check

We will confirm compatibility before dispatch. Add your UK registration or the last seven of your VIN at checkout so we can verify the correct application for your E46 Compact.

Installation and alignment

Professional fitting is recommended. MJ Modifications in Warwickshire offers expert installation and setup. For a fitting quote, email info@mjmodifications.co.uk. A four-wheel alignment after installation is strongly advised to maximise tyre life and handling performance.

Why buy this kit

If you are chasing real-world handling gains, a cleaner stance and reliability you can trust, the B12 Sportline is the smart choice. It is a cohesive, road-focused suspension upgrade that feels OEM-plus, improves confidence in all conditions and looks fantastic on the E46 Compact.

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