Twin Air Dual-Stage Foam Air Filter (Standard Dry or Factory Pre-Oiled) - Yamaha YZ250F / YZ450F 2018-2024

Product Description

Protect your intake tract and optimize engine airflow with the Twin Air Dual-Stage Foam Air Filter, tailored specifically for modern Yamaha YZ, WR, and Fantic four-stroke machines. Available as either an unoiled standard replacement or a factory machine-oiled unit ready for immediate installation, this filter allows you to choose the exact maintenance setup that matches your prep routine.

Both options feature Twin Air's proven dual-bonded open-pore foam construction. The coarse outer layer catches larger roost, dirt, and sand, while the denser inner layer traps microscopic silt from reaching your valvetrain. Laminated together without restrictive glue seams, Twin Air filters maximize air volume into the intake while the thick flat foam base ensures a tight, reliable airbox seal.

What's Included in This Package

Why Buy Twin Air Air Filters?

• Choose between a traditional dry filter or a mess-free, factory machine-oiled spare
• Engineered to exact OEM airbox specifications for a direct drop-in fit
• Proven dual-layer protection keeps dirt and abrasive silt out of your valvetrain
• Backed by Moto-House MX customer service before and after the sale

Select the version that fits your prep style—keep a dry filter ready on your bench or carry a sealed pre-oiled spare in your gear bag for quick swaps on race day.

Top Benefits: Twin Air Filter Options

• Dual-stage flame-laminated foam construction stops dirt while maximizing intake airflow
• Pre-oiled version (152221X) is machine-saturated with biodegradable BIO oil for 100% consistent pore coverage
• Thick, flat foam sealing base establishes an airtight barrier against the airbox rim
• Pre-oiled version includes a heavy-duty resealable bag to keep your spare clean and tacky inside your gear bag

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: What is the difference between the 152221 and 152221X?
A: Part number 152221 is a dry foam filter that must be oiled prior to use. Part number 152221X comes factory pre-oiled with Twin Air BIO oil in a resealable storage bag, ready to install immediately.

Q: Can the pre-oiled 152221X filter be washed and re-used?
A: Yes. After use, the pre-oiled filter can be cleaned with foam filter cleaner or BIO dirt remover, dried, and re-oiled just like the standard dry version.

Q: Will this fit the stock Yamaha filter cage?
A: Yes, both versions are molded to fit directly over the factory OEM plastic filter cage.

Expert Pro-Tip: If you choose the factory pre-oiled filter (152221X), keep it sealed in its resealable bag until you are at the track ready to ride. Before mounting either filter, run a clean contact-cleaner-dampened rag around the airbox sealing surface to remove any leftover grit, and apply a thin film of rim grease along the flat base for an airtight seal.

Recommended Pairings:

• Yamaha YZ250F & YZ250FX Performance Parts & Upgrades
• Yamaha YZ450F Performance Parts
• Motorcycle Chemicals & Filter Care Performance Parts

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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