BMC Air Filter FM339/21 Yamaha

BMC performance engine air filter designed as a replacement for the original equipment manufacturer (OEM) air filter in various Yamaha off-road/quad models, including the YFM 350 R Raptor and YFM 600 Grizzly.

Features:

Type: Cylindrical replacement air filter.

Material: Made of multi-layered (4 layers) cotton gauze, pre-oiled with a low-viscosity oil, and protected by an epoxy-coated alloy mesh to ensure resistance to fuel vapors and oxidation.

Filtration Efficiency: The filter guarantees the containment of impurities as small as 7 microns, offering a higher level of filtration and engine protection compared to a standard OEM paper filter's typical 10 microns.

Construction: Produced using a "Full Moulding" system that creates a single, durable part with no welded joints, ensuring an optimal and secure fit in the airbox.

Performance: Engineered to deliver increased airflow (reportedly up to 40% higher than conventional paper filters) with minimal pressure loss, which can improve engine efficiency, power, and throttle response.

Maintenance: The filter is washable and reusable, and can be cleaned and regenerated using a specific BMC regeneration kit for a long service life, offering long-term economic and environmental benefits over disposable filters.

Dimensions:

• Base Outside Diameter: 63 mm.
• Base Inner Diameter: 100 mm.
• Height: 223 mm.

Compatibility: Yamaha

• YFM 350 RAPTOR: 2004–2009
• YFM 350 WOLVERINE: 1994–2005
• YFM 350 X WARRIOR: 1987–2004
• YFM 350 X WOLVERINE: 1995–2009
• YFM 350 X WOLVERINE 2WD: 2006–2009
• YFM 600 GRIZZLY: 1998–2001