RFX Foam Air Filter FXAF8000155NO - Beta EVO 250 / 300 2T / 4T 2010-2022

Product Description

The RFX Air Filter delivers dependable intake filtration and balanced airflow for Beta EVO trials motorcycles. Manufactured by Multi Air, this twin-layer foam air filter allows your trials machine to breathe freely while preventing airborne dust, dirt, and water spray from reaching internal engine components during tight, technical sections.

Constructed with breathable twin-layered foam, the coarse outer layer catches larger mud and roost particles while the dense inner layer captures micro-dust before it can enter the intake boot. Engineered with nonflammable foam for four-stroke models, it provides exact airbox fitment developed through Multi Air's 30-plus years of specialized off-road filtration experience.

Top Features: RFX Foam Air Filter

• Twin-layer foam construction delivers steady intake airflow while trapping fine dust and grit.
• Nonflammable flame-retardant foam provides added protection against backfire combustion on four-stroke models.
• Precision-molded fitment ensures a snug, gap-free seal against the Beta EVO airbox base.
• Manufactured by Multi Air utilizing over 30 years of dedicated off-road filtration engineering.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this RFX air filter arrive pre-oiled or dry?
A: This filter (MPN FXAF8000155NO) is supplied dry (un-oiled) and requires foam air filter oil to be applied before installation.

Q: Can this filter be used on both 2-stroke and 4-stroke Beta EVO models?
A: Yes, it is built to the exact airbox specifications shared across the listed two-stroke and four-stroke Beta EVO trials platforms.

Q: Why is flame-retardant foam used on 4-stroke engines?
A: Four-stroke powerplants can backfire through the intake tract. Nonflammable foam prevents backfire sparks from igniting the filter media or oil.

Expert Pro-Tip: Trials airboxes are exceptionally compact and sit in close proximity to the frame and rear shock. When oiling this filter, work the foam oil in thoroughly and squeeze out all excess fluid completely so it does not pool in the shallow airbox floor. Always double-check that the filter base is fully seated in its locating channel before securing the cage latch.

Recommended Pairings:

• Beta 2-Stroke Performance Parts
• Beta 4-Stroke Performance Parts
• Air Filter Oil & Cleaning Chemicals

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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