BMC FBTW178-206P Twin Air Universal Conical Air Filter 178mm x 206mm

The BMC FBTW178-206P is a high-performance universal conical air filter from the Twin Air series, featuring a large 178mm rubber inlet connection and a 206mm filter body length. Engineered for automotive and motorsport applications, this filter delivers significantly improved airflow over standard paper filters while offering superior engine protection.

BMC's Twin Air design incorporates both lateral and central airflow inlets, maximizing the volume of air drawn into the intake system. The multi-layer cotton filtering element is treated with low-viscosity oil, enabling the filter to capture particles as small as 7 microns — far superior to synthetic filters that typically only stop particles 80 microns and larger.

Key Features:

• Inlet Connection: 178mm inner diameter rubber collar fits pipes and flanges of matching outer diameter
• Filter Body Length: 206mm
• Twin Air Design: Dual lateral and central airflow inlets for maximum flow volume
• Pre-Oiled Cotton Element: Ready to install straight out of the box — no pre-treatment required
• High Filtration Efficiency: Captures contaminants from 7 microns and up
• Capable of supporting engines up to 700 HP without risk of filter deformation
• Compatible with MAF/air flow sensors — safe for modern fuel-injected applications
• Washable and reusable — cleaned and re-oiled using the BMC regeneration kit (sold separately)
• Produces less than half the pressure drop compared to standard paper filters

The FBTW178-206P is a universal fit filter suitable for cars, motorcycles, and other powersport applications where a 178mm intake connection is present. Its large format makes it ideal for high-displacement or high-performance engine builds requiring maximum airflow capacity.