BMC Air Filter

BMC built its reputation in motorsport, supplying air filters to race teams before bringing the same construction down to road bikes and everyday riders. A BMC air filter uses multiple layers of cotton fabric soaked in low-viscosity oil, sandwiched between two aluminium mesh frames that are epoxy-coated to resist corrosion from fuel vapor and moisture. That layered build is what lets it flow more air than a stock paper filter without giving up filtration, and since it's washable, the same filter can outlast the life of the bike if you keep it clean.

• Race-proven construction: Multi-layer cotton fabric between corrosion-resistant aluminium mesh frames.
• Washable and reusable: Clean and reinstall the same BMC filter for the life of your bike.
• Two year warranty: Every BMC air filter is covered against production defects for two years from purchase.
• Model-specific fitment: Filter by your bike to find the exact BMC air filter for bike built for your airbox.

How a BMC Filter Is Built

The cotton fabric layers trap contaminants through sieving and retention rather than relying on the oil alone, so the filter catches debris without significantly restricting airflow. The aluminium mesh frame holds the fabric's shape under heat and vibration, and the epoxy coating protects it from the fuel vapor and humidity every bike's airbox is exposed to over time. It's a more involved build than a standard paper element, which is part of why the bmc filter price sits higher than a basic replacement filter, and why it's backed by a two year manufacturer warranty against defects.

Deciding between BMC and K&N? Both are excellent, but they aren't identical. See our BMC vs K&N comparison on the Performance Air Filter page, or browse K&N air filters directly.

FAQs

Q1: What is a BMC air filter made of?

A1: It's built from multiple layers of cotton fabric soaked in low-viscosity oil, held between two aluminium mesh frames coated in epoxy resin to resist corrosion. This construction filters contaminants while allowing more airflow than a standard paper element.

Q2: How much does a BMC air filter for bike cost?

A2: BMC filter price varies by model and bike application, generally running higher than a standard paper filter given the multi-layer construction and washable design. Filter by your bike on this page to see the exact price for your model.

Q3: Is a BMC air filter washable and reusable?

A3: Yes. BMC filters are designed to be cleaned and re-oiled rather than thrown away, and BMC states the filter can last the entire service life of the vehicle when properly maintained.

Q4: What warranty comes with a BMC air filter?

A4: BMC covers its air filters against production defects for two years from the date of purchase.

Q5: Will a BMC air filter fit my bike without modification?

A5: BMC filters are engineered to match the stock airbox of specific bike models, so as long as you select the correct listing for your exact model and variant, it should fit without any trimming or modification.

Q6: How does a BMC air filter compare to a K&N air filter?

A6: Both use washable, oiled filtration built for more airflow than a stock paper element, but the construction and warranty differ. BMC uses cotton fabric between epoxy-coated aluminium mesh frames and carries a two year warranty, while K&N uses cotton gauze and backs most filters with a much longer warranty. See our full BMC vs K&N comparison to see which fits your riding.