BMW X4 F26 M40i Induction Upgrade by Pipercross

Give your X4 M40i the breathing it deserves with a premium British-made foam intake element from Pipercross. This direct-fit, serviceable filter slots into the factory air box and delivers freer breathing, strong engine protection and a quality finish that lasts. It is a smart, long-term upgrade for everyday driving and spirited road use on the BMW X4 F26 M40i from 09/2015 onwards.

Key reasons enthusiasts choose this intake element

• Direct-fit replacement for the stock paper element in the factory air box
• Flow bench proven to move up to 30 percent more air than a typical disposable filter
• Triple-density foam construction maintains flow for longer between cleans
• Simple to wash and re-use for long-term savings and less waste
• Tested for improvements in throttle response, efficiency and usable power
• Lifetime warranty for road use for peace of mind
• Hand-made in the UK with consistent fit and finish

How the technology works

Pipercross uses a multi-layer foam matrix that offers high dust-holding capacity without choking flow. The clever three-stage structure captures particles progressively while keeping resistance low, so your BMW keeps pulling clean air even as mileage builds.

• Outer layer: coarse foam that stops the large debris
• Middle layer: medium cell foam that traps the bulk of contaminants
• Inner layer: fine foam to catch the smallest particulates

The result is dependable filtration, sustained airflow and extended cleaning intervals compared with paper or cotton gauze alternatives. Built in Northamptonshire, every unit is carefully assembled to deliver repeatable performance.

Fitment and installation

Compatibility: BMW X4 F26 M40i from 09/2015 onwards. This is a direct-fit element for the factory air box and installs as a straightforward swap for the original filter.

Want it fitted for you? Book professional installation with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Why buy from MJ Modifications

We run Pipercross filters on our own builds and customer cars because they are reliable, easy to maintain and deliver the crisp response enthusiasts want. Our BMW clients rate the quality, UK manufacture and lifetime road-use warranty, making this one of the best value intake upgrades for the X4 M40i platform.

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