AirRex V1 Air Ride Suspension/Air Bag Kit for BMW 1 Series F20/F21 (2013+) — Bolt-On Front & Rear Air Struts, Height & Damping Adjustable, Pressure Management, WiFi App Control, Viair 444C Compressor, 3 Gal Tank — Fits M135i/M140i — Not 1M

AirRex V1 air bag kit for BMW 1 Series F20 F21 2013 onwards - not suitable for 1M

Give your BMW hatchback the stance, comfort and control it deserves with the AirRex V1 air bag setup. This complete front and rear package swaps traditional springs for high quality pneumatic struts and shocks, delivering smooth ride quality on UK roads, instant height changes and show car presence without sacrificing daily usability. Direct-fit hardware utilises factory mounting points for a clean install on F20 and F21 models.

Highlights

• Direct fit for BMW 1 Series F20 and F21 from 2013 onwards - excludes 1M
• Pressure-sensing control for consistent ride height and repeatable presets
• Wireless control via touchscreen remote and WiFi phone app for iOS and Android
• Front and rear air struts with 12-click damping adjustable monotube dampers
• Height adjustable bodies to fine-tune wheel fitment and clearance
• Camber adjustable top mounts on the front where the chassis allows
• Durability tested from -40°C to +60°C with load and pressure validation

Ride, handling and build

AirRex performance struts use robust bellow air springs matched to monotube dampers for a composed, quiet ride and confident handling. Slim double bellow bags are used where space is tight, improving packaging and reliability compared with sleeve designs. The 12-stage damping lets you dial in comfort for commuting or firmer control for B-road blasts, while threaded bodies and camber plates help you achieve the perfect stance and tyre fitment.

Smart control made easy

The V1 system references pressure to manage height, making everyday driving simple and predictable. Use the sleek wireless handset for quick All Up and All Down commands, enable Rise on Start so the car lifts as you turn the key, or connect to the WiFi module with your smartphone for convenient app-based adjustments.

What you get in the box

• Front and rear AirRex air struts with height and damping adjustment
• AirRex touchscreen wireless controller
• WiFi-enabled control module for iOS and Android
• 444C compressor by Viair in black
• 3 gallon air tank with integrated water removal system
• AirRex ECU and manifold
• Check valve
• Power and earth cables
• 1/4 inch air line
• Fuses
• USB charge cable
• AirRex key chain

Proven on our own builds

We run and fit these kits on customer 1 Series projects and our own demonstrators. Feedback is consistently positive on ride quality, reliability and how quickly you can switch between daily driving height and a show-level drop. If you want a bagged BMW F20 or F21 with OEM-plus refinement, this package delivers.

Vehicle compatibility

BMW 1 Series F20 and F21 - 2013 onwards. Not for 1M.

Fitting and support

Professional installation recommended. MJ Modifications offers supply and fitting at our Warwickshire workshop. Request a fitting quote: info@mjmodifications.co.uk

Why buy from MJ Modifications

• UK specialists in air systems and performance chassis parts
• In-house experience setting up AirRex on BMW platforms
• Trusted by enthusiasts for quality, aftercare and real-world results

Search-friendly terms

F20 air bag kit, F21 air bag kit, bagged BMW 1 Series, adjustable air shocks, BMW 1 Series air struts, pneumatic suspension for BMW hatchback, M135i air bags, M140i air bags, BMW 1 Series stance kit, height adjustable air suspension, WiFi air management, pressure based air control, monotube air struts, double bellow air springs, triple bellow air springs, 3 gallon tank, 444C compressor, All Up All Down, Rise on Start, camber plates for BMW 1 Series.

Upgrade your F20 or F21 today and enjoy show-stopping lows with daily-drive comfort. Order your AirRex V1 kit from MJ Modifications and transform your BMW.