BMC Air Filters

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From West Performance – BMC, The Best Performance Air Filter you’ve never heard of!!!!

The knowledge and experience gained on track is transferred to street production in order to offer performance products, tested and in continuous evolution, designed to satisfy the requirements of the most demanding motorcyclists. The materials used in production are of the highest standard: filters are made in one single piece with no welded joints thus avoiding breakage; the filtering material is composed of a special cotton gauze soaked with low viscosity oil and covered with an epoxy coated alloy mesh to ensure protection from petrol fumes and oxidization due to air humidity. Furthermore the cotton has the advantage of being washable and therefore reusable. In this way BMC air filters guarantee superior air capacity in respect to traditional paper filters enabling minimum loss of power in the air flow and therefore obtaining better performance from the engine.

Race Bike Filters

Alongside standard filters, BMC has produced a race version for the most important bike models. These filters have the same shape as the standard version but with a different filtering body designed to take in more air than other air intake systems, but without compromising its filtering properties. BMC RACE filters are for people who are not satisfied with the standard performance of the bike and want to improve the engine by upgrading other bike parts. With this filter they can find the best balance for a bike aiming for the top. BMC RACE filters are identified by an orange line inside the filtering body.


BMC Prefilters are made from polyester treated with a hydro-repellent process that does not impair normal air flow. The BMC prefilter prevents the induction of elements present on a standard off-road route such as sand, soil, water and rubble. Moreover, by preventing the filter from becoming blocked, they help to maintain optimum performance of the bike at all times.



  • F.1 Constructors World Championship with Ferrari: 2009, 2008, 2007, 2004, 2003, 2002, 2001, 2000, 1999.
  • F.1 Drivers World Championship:2009, 2008, 2007, 2004, 2003, 2002, 2001, 2000.
  • WTCC Constructors and Drivers World Championship with Seat: 2009
  • American Le Mans Series with Audi: 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000.
  • Le Mans 24 Hours with Audi: 2012, 2011, 2010, 2008, 2007, 2006, 2005, 2004, 2002, 2001, 2000.
  • Le Mans 24 Hours with Bentley: 2003.
  • Le Mans 24 Hours with Porsche (LMPZ): 2009.
  • DTM Championship: 2009, 2006, 2005, 2003 (Mercedes); 2008, 2007, 2004, 2002 (Audi).
  • Superstars Constructors and Drivers Italian Championship: 2010, 2009
  • CIVT 2004 Italian Championship with Fiat Punto HGT (Cl.N4) Driver G.Mancini.
  • Constructors Italian Rally Championship 2005 with Mitsubishi Lancer Evo IX RalliArt Italy.
  • Italian Rally Championship 2004 with Renault Clio (Gr.A Cl.2000)Drivers G.B.Conti and P.Urgeghe.



  • Drivers Championship Moto GP 2012 (Yamaha Factory Racing Team)
  • Manufacturers/Drivers Championship AMA 2009 (Team Rockstar Makita Suzuki)
  • World Endurance Champion 2009 (Team Yart)
  • Drivers Championship WSBK 2012, 2010 (Team Aprilia Racing), 2009 (Team Yamaha)
  • Manufacturers Championship WSBK 2012, 2010 (Team Aprilia Racing), 2007 (Team Yamaha)
  • 8 HR Suzuka Winner 2007 (Team Suzuki Yoshimura)


Why choose BMC?


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.