Alfa Romeo Stelvio Cold Air Intake - MAXFlow Carbon Fiber Intake System w/ BMC Twin Air Connical Filter

Product Information
$799.99 Save $100.00
As Low as  with Affirm.
Average Rating:
1 Reviews
Fits Models

Please make sure this item fits your vehicle.

In order to reduce errors in orders, please make sure the product you are ordering fits your vehicle model.

Drive now, Pay later!

Make monthly payments with no hidden fees!
Free Global Shipping
Our MADNESS MAXFlow Carbon Fiber Intake System is designed to deliver performance gains, improved sound along with show stopping looks.

The MAXFlow Carbon Fiber Intake System features a custom made housing that is manufactured out of 100% Genuine Carbon Fiber. The housing is finished with a high gloss clear coat for a showstopping look that is second to none.

The MAXFlow Carbon Fiber Filter Housing is designed to link up with the original factory front air inlet of your Alfa Romeo Stelvio. This design allows for clean, cold air coming in from the front air inlet opening to be routed directly in to the new airbox. The factory air inlet was designed for maximum efficiency by Alfa Engineers and we designed our system to take advantage of this design.

Why choose this system over other open systems on the market?

An open air system would definitely be easier to design and manufacture and would also cost significantly less. However, when we set out to design our intake system our goal was to simply design the best product regardless of cost. A fully enclosed system like this is superior to an open filter design for many reason and some are outlined below.

The new MAXFlow Carbon Fiber Air Intake System utilizes the factory air inlet that draws cooler, cleaner air from the outside of the vehicle. Intake air temps are lower on this intake design over an open filter design since incoming air for the intake is sourced directly from the outside of the vehicle instead of the engine bay in which it is much hotter. Colder incoming air provides the MAXFlow Intake System with bigger volumetric mass. A greater mass of air gives better combustion and increased performance.

The air coming in to the filter is also much cleaner since the air is drawn from the outside of the vehicle and routed directly to the closed intake design on our MAXFlow Intake System. Other open filter designs draw hotter, dirtier air from the inside of the engine bay which can have an effect on overall performance. On an open filter design the filter media gets clogged significantly faster than a closed system. As the filter media gets clogged with dirt and dust airflow is further reduced which can and will cause performance losses.

The new MADNESS MAXFlow Carbon Fiber Intake System further sets itself apart from the rest by utilizing the very best air filter on the market.

The new system uses a specially designed Italian Made BMC Twin Air Conical Filter. This  BMC Twin Air Conical Filter features a lateral and central airflow for maximum performance gains. The BMC Filter uses specially designed Red Rubber that is heat and shock resistant. Unlike other filters on the market this filter cannot be distorted by temperature. The special mesh used for the filtering element enables this BMC Air Filter to handle up to 700 Hp (NOS or Turbo) without having any deforming problems in the filter.

This MAXFlow Carbon Fiber Intake System comes with the Carbon Fiber Air Intake Housing, BMC Twin Air Conical Filter along with all hardware needed for an easy direct bolt on conversion.
Go one step further and add on our MAXFlow Silicone Hose Intake Upgrade Kit (coming August 2018 and will be available as an optional upgrade to the MAXFlow Intake System at a discounted price. We will update everyone that purchases this Cold Air Intake System by email and phone call once the hose upgrade kit is in stock).

MADNESS MAXFlow Carbon Fiber Intake System Features:
  • Designed and tested in USA on our own Alfa Romeo Stelvio and Giulia test vehicles
  • Housing manufactured out of 100% Genuine Carbon Fiber
  • Custom Carbon Fiber Housing links directly with the factory air inlet for maximum airflow
  • Significantly outflows the factory intake system
  • Direct Bolt On Design
  • Fully Reversible
  • No permanent modifications required
  • Utilizes the very best Italian Made BMC Twin Air Conical Filter
  • Comes with all hardware for easy installation
  • Tuned for increased performance and enhanced air intake sound
  • Designed to fit the Alfa Romeo Stelvio 

Why choose BMC over other high flow drop in filters?


OEM paper filters present an elevated resistance to the passage of air and consequently a reduction in engine performance. Compared to a paper filter the BMC air filter permits a notably higher air flow passage, producing less than half the Pressure Drop (difference between the air pressure before and after the filter element) over the paper filters. This doesn't compromise the filter's engine protection efficiency: thanks to the combination of the different oiled layers, containment of all impurities is guaranteed as far as 7 microns, while paper filters generally require total filtration of particles as small as 10 microns. So BMC air filters let more air into the engine while still protecting it better than paper ones.
In addition, a traditional paper filter must be replaced regularly during routine maintenance whilst the BMC air filter is reusable and has a general life-span equal to that of the vehicle.


The principal difference between BMC oiled cotton filters and synthetic material filters (for example, plastic material cloth) is seen in the ability to retain air impurities. Synthetic filters allow the passage to particles smaller than the size of the tiny holes in the filtration material- this means that a filter with 80 micron holes allows the passage of all elements of a size smaller than the hole, only guaranteeing containment of particles larger than the dimension of the hole (for example - sand has a dimension of around 50 microns). The cotton has a wider texture which favors a greater air-flow passage and through the combination of the different oiled layers, guarantees containment of all impurities from as small as 7 microns.


BMC's support frame structures are manufactured using a unique procedure called "Full Moulding" which enables the production of the characteristic red filter from a single mold without the need for gluing at the corners, often the cause of easy breakage.
BMC air filters have the smallest rubber infringement in the market (less than 6mm), thus allowing the maximum filtering surface.


The BMC air filter is composed of a metallic mesh covered by an oiled multi-layer cotton filtration material. This guarantees a high level of filtering efficiency and a limited loss of air pressure. The oil used gives the material its "sticky" adhesive characteristic which aids in the retention of air impurities, without compromising or blocking air flow penetration. This also creates a continuous filtering process. The cotton filtrating element is contained within an external support frame which interfaces with the air box and allows it to be securely installed in the air-box. Every stage of the production process (from design to manufacturing) is carried out in Italy by Italian engineers using the finest materials.   


BMC operates in a number of areas: automotive, racing, aerospace, nautical and industrial, according to the specific regulations and requirements of each and every one of this sectors. Consequently, BMC tests are severe and thorough, thus ensuring the highest quality in respect to paper, foam and plastic materials. The technical solutions used by BMC are derived from the results of a continuous and intense program of laboratory tests. BMC carries out filtration tests in reference to the international standards for filtering (ISO 5011). BMC Air Filters have a 98.5% filtering efficiency in respect to this standard.


BMC air filters are made of cotton, a natural material which can be reused several times after been washed with a special detergent and re-soaked in oil, thus saving the cost of changing it every time the vehicle is serviced and reducing wastes for the environment.

BMC Twin Air Filter Features:
  • Designed and manufactured in Italy
  • BMC Produces the world’s best quality air filters for racing and road use
  • Superior construction and filtration
  • Lifetime warranty
  • Reusable

MADNESS MAXFlow Silicone Hose Intake Upgrade Kit (Optional)

This Silicone Hose Intake Upgrade Kit replaces the restrictive, thin plastic factory part with a high flow, high quality, precision molded part that not only looks great under the hood, but provides your Alfa Romeo Stelvio with improved performance.

The MADNESS MAXFlow Silicone Hose Intake Upgrade Kit can be purchased as an add on item at the check out screen when you select the MAXFlow Carbon Fiber Intake System or by itself. If you would like to purchase the MAXFlow Silicone Hose Intake Upgrade Kit without the MAXFlow Carbon Fiber Intake System please check out our other listings for just the Silicone Hose Upgrade Kit.

  • Can be used with the MADNESS MAXFlow Carbon Fiber Air Intake System or with the factory airbox
  • Precision molded part for a precise fit
  • Silicone hose is engineered to handle well over 40 PSI
  • Multi Layer, Reinforced, High Quality Silicone Construction
  • Precisely machines fittings
  • Smooth bends and increased diameter for better airflow
  • Decreased Air Turbulence and Pressure Loss
  • Simple and Direct Installation
  • Provides superior protection against engine heat
  • Improved intake note
  • Improved Throttle Response, HP and TQ
  • All Hardware and instructions included
  • Lower Air Intake Temps

Need Assistance?

We're here to help!

Call us at 512-982-9393
and get assistance from one of our sales team members!

Product ID Number:


Lowest Price Guarantee

We price match and beat our competitors!


We ship globally and offer multiple shipping item discounts.

About Manufacturer

MADNESS Autoworks is your One Stop Shop for customizing, accessorizing and servicing your favorite ride.

After spending over a decade customizing countless vehicles and working with many local and international suppliers we have been fortunate to be able to offer a very large inventory of products to our fellow enthusiasts. However, at times we have found that what was available was not good enough or perhaps other options were also needed. When this happens we either design and manufacture the product ourselves or tap one of our manufacturing partners and ask them to assist and make a product to our specs.

Over the years that we have been in business we have formed a number of partnerships with our most trusted manufacturing partners and suppliers to help us produce products that we felt were needed and not available. At times we have also invested in infrastructure, manufacturing equipment and have recruiting some of the best talent that could help us design and build superior products and make them available to our fellow drivers.

Our goal at MADNESS is to provide top quality products that has been tested and used in our own vehicles and have proven to last and provide a good value for the investment. We do not design and build our products to be the cheapest, we design then to be the best value for the money and stand behind them the same way we stand behind our work.

Product Reviews

Average user rating

5 / 5

1 total