Twin Air Motorcycle Air Filter - 723.18.13
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eBay£19.79Visit shop Twin Air Air Filter Fits for Beta RR & Xtrainer 13-19
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10 offers from £19.79 - £27.68
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eBayTwin Air Air Filter Fits Beta RR 125 250 350 390 400 430 500 13-19
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Product Information
Full details
The Twin Air Motorcycle Air Filter is designed for off-road riders and enthusiasts who demand maximum engine protection without sacrificing horsepower. Leveraging over 40 years of filtration engineering, this filter uses a dual-layer foam system to block debris while allowing high airflow, making it ideal for dusty or muddy riding conditions. A notable caveat is that as a foam filter, it requires regular cleaning and proper re-oiling to maintain its performance, unlike disposable paper alternatives.
All features
| Model Part Number | 723.18.13 |
|---|---|
| Brand | Twin Air |
Extended Product Information
FAQs
Can I use engine oil to oil my foam filter?
No. You should use dedicated foam air filter oil, which is sticky and designed to trap fine dust particles effectively.
How often should I clean the filter?
Cleaning intervals depend on riding conditions. In dusty or muddy conditions, you should clean it after every ride.
Is this filter pre-oiled?
Unless specified as pre-oiled, these filters come dry and must be oiled before the first use.
What happens if I don't use filter grease?
Using grease on the sealing lip ensures an airtight seal. Without it, micro-dust can bypass the filter edge and enter the intake.
Can I use gasoline to clean the foam?
Avoid using gasoline as it can degrade the adhesive in the filter seams and weaken the foam structure over time.
Troubleshooting
Engine feels choked or unresponsive
The filter may be over-oiled or excessively dirty. Clean the filter and re-apply a light, even coat of oil.
Visible dirt inside the airbox past the filter
Verify the filter is seated correctly against the airbox mounting surface. Ensure the retaining cage is applying even pressure.
Pros and Cons
Pros
- Superior filtration capabilities compared to stock or paper filters
- Washable and reusable design reduces long-term maintenance costs
- Improves engine air intake efficiency
- Durable construction handles extreme off-road conditions
Cons
- Requires manual washing and re-oiling
- Longer maintenance time than simple disposable filters
- Improper oiling can lead to poor filtration or restricted airflow
Setup, Compatibility & Care
Setup: Remove your seat and access the airbox. Release the existing air filter cage, remove the old filter, and ensure the airbox is wiped clean of any dirt. Apply a thin layer of filter grease to the base of the new Twin Air filter for a perfect seal against the airbox rim. Install the cage inside the filter and secure it.
Care Instructions:
- Wash the filter using a dedicated foam filter cleaner or mild degreaser.
- Rinse thoroughly with water and allow to dry completely (do not wring or twist as this damages the foam).
- Apply air filter oil evenly across the surface, working it in until the foam is fully saturated.
- Squeeze out excess oil to prevent it from dripping into the air intake.
- Reinstall the dry, oiled filter into your motorcycle.