The facts.
| Brand | BMC |
|---|---|
| Part number | FM450/04 |
| Filter type | Replacement air filter |
| Media | Four-layer oiled cotton gauze |
| Frame material | Rubber |
| Mesh material | Aluminium |
| Fitment | Yamaha YZF-R6 RJ11 (2006-2007) |
| Reusable | Yes — washable and re-oilable |
DescriptionThe whole story▼
Engineered with knowledge drawn directly from motorsport, the BMC replacement air filter FM450/04 is a precise drop-in upgrade for the Yamaha YZF-R6 RJ11 (2006-2007) that delivers all-day engine confidence — whether you're commuting, touring or pushing hard on a Sunday blast. Its four-layer oiled cotton construction breathes more freely than a standard paper element, letting your inline-four pull cleaner, denser air on every run while keeping harmful particles well away from the combustion chambers.
Key Features
- Four-layer cotton gauze construction soaked in a low-tack oil for the ideal balance of airflow and filtration efficiency
- Aluminium mesh layer shields the cotton media from petrol vapours and oxidation, keeping the filter structurally sound over years of use
- Rubber frame prevents cracking or distortion, ensuring a consistent, leak-free seal in the airbox every time
- Washable and reusable design — a single filter replaces multiple disposable paper elements over its service life
- Minimised pressure drop across the filter translates to improved throttle response and a more linear power delivery
- Tested to international filtration standards for proven quality and long-term performance
Built for the Long Haul
The BMC FM450/04 is not a one-season consumable. Its rubber-rimmed housing holds shape through heat cycles and vibration, while the aluminium mesh acts as a structural backbone that resists the sort of petrol-vapour degradation that shortens the life of lesser aftermarket filters. When the filter eventually needs attention, a dedicated BMC cleaning kit restores it to as-new specification — no need for costly replacements on a tight service schedule.
Airflow and Filtration in Balance
A common misconception about performance air filters is that increased airflow must come at the expense of filtration. BMC's layered cotton-and-oil system challenges that trade-off directly. The four progressive layers of cotton gauze trap progressively finer contaminants as air travels through the media, while the low-viscosity oil coating captures microscopic particles without restricting the volume of air reaching the throttle bodies. The result is a cleaner engine environment and a more responsive ride, maintained consistently across the filter's extended service intervals.
Fitment and Compatibility
This filter is a direct OEM replacement for the following model:
- Yamaha YZF-R6 RJ11 — model years 2006 and 2007
No airbox modification is required. The rubber frame is dimensioned to match the original filter housing exactly, making installation straightforward with standard workshop tools.
Specifications
| Attribute | Detail |
|---|---|
| Brand | BMC |
| Part number | FM450/04 |
| Filter type | Replacement air filter |
| Media | Four-layer oiled cotton gauze |
| Frame material | Rubber |
| Mesh material | Aluminium |
| Fitment | Yamaha YZF-R6 RJ11 (2006-2007) |
| Reusable | Yes — washable and re-oilable |
FitmentWhich bikes this fits▼
- Yamaha YZF-R6 RJ11 (2006–2007)
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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
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