What does the MMX BMW N55 air intake improve over the factory airbox?

The MMX BMW N55 air intake replaces the factory airbox with single-piece mandrel-bent aluminum pipework and a dual-entry cotton gauze filter, removing the joints, bends, and flow restrictions of the OEM system. The result is improved throttle response, better turbo efficiency, and a more engaging induction and spool sound that the factory airbox suppresses.

Does the BMW N55 air intake retain the cold-air feed?

Yes. The custom MMX lower base integrates directly with the OEM cold-air duct, retaining the factory cold-air feed and acting as a heat shield around the filter. This preserves the intake air temperature advantage and ensures consistent performance rather than drawing hot air from within the engine bay.

Will NVH increase after fitting this N55 air intake?

No. The billet CNC-machined mounting brackets are fitted with rubber isolators that absorb engine movement and prevent vibration from transferring through the intake pipework into the cabin. The kit is designed for real-world daily use, not track-only applications.

Is this compatible with the MMX N55 silicone intake hose?

Yes. The MMX BMW N55 air intake pairs with the MMX silicone intake hose for a complete staged induction upgrade. The silicone hose replaces the factory bellows between the airbox outlet and the turbo inlet, ensuring the full performance benefit of the intake system reaches the turbo without restriction.

Does installation require cutting or modification?

No. The MMX BMW N55 air intake kit is a fully reversible installation using existing mounting points and the factory cold-air duct. No cutting, drilling, or permanent modification is required.

Description

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BP PRICING DIFFERENCE

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Description

MMX Air Intake Kit for Fxx BMW M135i, M235i, 335i, 435i, and More (N55 Engine)

BMW N55 air intake kit from MMX Performance is a complete induction upgrade for F-chassis N55-powered models, replacing the restrictive factory airbox with a system engineered around a single-piece mandrel-bent aluminum intake pipe, a dual-entry cotton gauze air filter, and a custom MMX lower base that doubles as a heat shield around the filter. The mandrel-bent single-piece construction eliminates the joints and bends of the OEM system, delivering a smooth, unobstructed airflow path from filter to turbo for improved performance and a more aggressive induction character. The OEM cold-air duct is retained and integrates directly with the MMX lower base, preserving the factory cold-air feed and isolating the filter from heat generated in the engine bay. Billet CNC-machined brackets with rubber isolators manage engine movement and minimize NVH, and the intake pipe is finished in MMX’s proprietary anodized black coating with a laser-etched MMX logo. The entire kit installs in minutes with no cutting or permanent modifications required and is fully reversible.

Features

Single-piece mandrel-bent aluminum intake pipework for unobstructed airflow
Dual-entry cotton gauze air filter for improved filtration and induction character
Custom MMX lower base integrates with OEM cold-air duct and acts as a heat shield
Retains OEM cold-air feed for consistent intake air temperature
Billet CNC-machined mounting brackets with rubber isolators to minimize NVH
MMX proprietary anodized black finish with laser-etched MMX logo
Improved engine performance and enhanced induction sound
No cutting or permanent modifications; fully reversible installation

Applications

BMW 235i: F22, F23 | 2014-2016
BMW 335i: F30, F31, F34 | 2011-2016
BMW 435i: F32, F33, F36 | 2013-2016
BMW 535i: F07, F10, F11 | 2010-2017
BMW 640i: F06, F12, F13 | 2011-2018
BMW 740i: F01, F02 | 2012-2015
BMW 740Li: F02 | 2012-2015
BMW ActiveHybrid 3: F30 | 2012-2015
BMW ActiveHybrid 5: F10 | 2011-2016
BMW M135i: F20, F21 | 2012-2016
BMW M235i: F22, F23 | 2014-2016
BMW X3 xDrive35i: F25 | 2011-2017
BMW X4 xDrive35i: F26 | 2014-2016
BMW X5 xDrive35i: F15 | 2013-2018
BMW X6 xDrive35i: F16 | 2014-2019

Notes

Compatible with N55 engines only. Does not fit N54, B58, or other engine variants.
Sold as a complete kit with all hardware included

Frequently Asked Questions

What does the MMX BMW N55 air intake improve over the factory airbox? The MMX BMW N55 air intake replaces the factory airbox with single-piece mandrel-bent aluminum pipework and a dual-entry cotton gauze filter, removing the joints, bends, and flow restrictions of the OEM system. The result is improved throttle response, better turbo efficiency, and a more engaging induction and spool sound that the factory airbox suppresses.
Does the BMW N55 air intake retain the cold-air feed? Yes. The custom MMX lower base integrates directly with the OEM cold-air duct, retaining the factory cold-air feed and acting as a heat shield around the filter. This preserves the intake air temperature advantage and ensures consistent performance rather than drawing hot air from within the engine bay.
Will NVH increase after fitting this N55 air intake? No. The billet CNC-machined mounting brackets are fitted with rubber isolators that absorb engine movement and prevent vibration from transferring through the intake pipework into the cabin. The kit is designed for real-world daily use, not track-only applications.
Is this compatible with the MMX N55 silicone intake hose? Yes. The MMX BMW N55 air intake pairs with the MMX silicone intake hose for a complete staged induction upgrade. The silicone hose replaces the factory bellows between the airbox outlet and the turbo inlet, ensuring the full performance benefit of the intake system reaches the turbo without restriction.
Does installation require cutting or modification? No. The MMX BMW N55 air intake kit is a fully reversible installation using existing mounting points and the factory cold-air duct. No cutting, drilling, or permanent modification is required.

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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MMX Air Intake Kit for BMW F-Chassis Models (with N55 engine) [MMR11-0501]

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MMX Air Intake Kit for Fxx BMW M135i, M235i, 335i, 435i, and More (N55 Engine)

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

Reviews