Bilstein B14 Coilover Kit - BMW M135i / M140i

Transform the way your BMW 1 Series drives with a premium height-adjustable suspension upgrade engineered for real-world roads and fast road use. This German-made coilover system delivers a precise 30 to 50 mm ride height range, sharper turn-in, improved grip and a purposeful stance, all while keeping everyday comfort in check. It is a direct-fit replacement for models without electronic damper control and is a go-to choice for enthusiasts who want predictable handling and a clean, even drop.

We have fitted this kit on customer cars and our own builds and the feedback is consistently excellent. Expect taut body control, reduced roll and a composed ride on British B-roads. If you want a suspension refresh that looks right and feels even better, this is it.

• Continuously height adjustable threaded bodies for precise front and rear lowering
• Gas-pressure monotube technology for consistent damping and confident road holding
• Matched springs and dampers tuned for the platform for balance and stability
• Galvanised, corrosion-resistant finish built to handle UK weather and road salt
• Direct-fit installation with no cutting or welding required
• Designed for vehicles without electronic suspension control
• Approximate lowering range: 30 to 50 mm
• Maximum axle loads: front up to 1095 kg, rear up to 1285 kg
• Made in Germany and proven on demanding test tracks

Perfect for owners seeking a performance suspension kit, adjustable shocks and springs, a quality lowering solution for a daily-driven car, or a street and track-ready coilover setup that enhances confidence without ruining ride quality. Ideal for stance, alignment tuning and fast-road geometry setups.

Vehicle compatibility highlights (BMW F-chassis):

• BMW 1 Series F20 F21: 114i, 116i, 118i, 120i, 125i, M135i, M140i, plus 114d, 116d, 118d, 120d, 125d
• BMW 2 Series F22 F23: 218i, 220i, 228i, 230i, M235i, M240i, and diesel variants
• BMW 3 Series F30 F31 F34: 316i through 340i, 330e hybrid, and diesel models
• BMW 4 Series F32 F33 F36: 418i through 440i and diesel equivalents
• ALPINA B3 Saloon and Touring models listed for this application

If you are unsure about fitment for your exact model, axle weights or intended ride height, contact us and we will be happy to help.

Why enthusiasts choose this setup

• Confident handling with real adjustability for road and occasional track days
• Even drop front to rear for the perfect look without the crashy ride
• Trusted quality from a leading German suspension manufacturer

Professional fitting and alignment

For installation, corner height setup and geometry, we recommend booking with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and advice. A proper four-wheel alignment is recommended after installation to get the most from your new suspension.

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