Bilstein B14 Coilover Kit - BMW M135i / M140 & F2x RWDi / f3x RWD

Height adjustable performance suspension for BMW F2x and F3x rear wheel drive

Transform the way your BMW turns in, grips and looks. This Bilstein B14 PSS height adjustable suspension kit delivers a serious handling upgrade with real world comfort. Expect sharper steering response, reduced body roll and a purposeful stance for fast road and track day use. Developed in Germany and proven on the Nürburgring, it is a go to suspension upgrade for enthusiasts who want confidence and control without harshness.

Perfect for drivers searching for BMW M135i coilovers, M140i suspension, F20 F21 coil over kit, F22 F23 adjustable suspension, F30 F31 coilover suspension, F32 F33 F36 lowering kit, BMW 1 Series 2 Series 3 Series 4 Series RWD suspension upgrade, Bilstein PSS kit and monotube shock and spring sets.

Why choose this setup

• Ride height adjustment approximately 30 to 50 mm for a tailored stance and balance
• Monotube gas pressure dampers for consistent performance and fade resistance
• Matched performance springs tuned per application for grip and stability
• Threaded, zinc plated bodies for precise adjustment and excellent corrosion resistance
• Application specific valving developed and tested in Germany for the F2x and F3x RWD platforms
• Direct fit solution for vehicles without electronic suspension control

Compatibility and key specs

• Rear wheel drive only. Not suitable for xDrive models
• For cars without factory adaptive damping or electronic suspension control
• Lowering range: approximately 30 to 50 mm
• Maximum axle loads: up to 1095 kg and up to 1285 kg

Model coverage summary

Fits a wide range of rear wheel drive BMW models on the F chassis, including:

• BMW 1 Series F20 F21 including 114i 116i 118i 120i 125i M135i M140i and diesel variants 114d 116d 118d 120d 125d
• BMW 2 Series F22 F23 including 218i 220i 228i 230i M235i M240i plus 218d 220d 225d
• BMW 3 Series F30 F31 F34 including 316i 318i 320i 328i 330i 335i 340i 316d 318d 320d 325d 330d, ActiveHybrid 3 and 330e rear wheel drive
• BMW 4 Series F32 F33 F36 including 418i 420i 428i 430i 435i 440i plus 418d 420d 425d 430d
• Also suits Alpina B3 Saloon and Touring in rear wheel drive form

If you are unsure about compatibility or axle loads for your exact vehicle, contact us and we will confirm before you order.

The MJ Modifications verdict

We have installed this kit on our own builds and multiple customer cars across the F platform. Feedback is consistently excellent. Ride quality remains compliant on UK roads, body control is vastly improved and the car sits just right. It is a brilliant balance for daily driving, spirited B road runs and occasional track work. If you want a proven BMW suspension upgrade that simply works, this is the one.

Professional fitting and setup

Installation, corner height setup and fast road or track alignment available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and advice on ride height settings for your use case.

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