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Apico Air Filter - Montesa 315R 1997-2004, 4RT 250/260/300 2005-2024 - AFMON1305

Apico Air Filter - Montesa 315R 1997-2004, 4RT 250/260/300 2005-2024 - AFMON1305

The Apico Air Filter is designed as a high-performance replacement for your motorcycle, engineered...

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eBayApico Air Filter MONTESA 315R 97-04, 4RT 250/260/300/301 05-21
£2.95 delivery
£12.00
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GhostBikes.comApico Air Filter - Montesa 315R 1997-2004, 4Rt 250/260/300 2005-24
£3.99 delivery
£14.99
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Product Information

Full details

The Apico Air Filter (AFMON1305) is designed for serious off-road riders and trials enthusiasts who require a reliable, high-performance replacement for their Montesa motorcycles. Engineered as a direct OEM equivalent, it features dual-stage bonded foam that balances maximum airflow for horsepower gains with the filtration efficiency needed to protect your engine from dust and debris. While this filter offers exceptional durability, it requires regular cleaning and specialized air filter oil to maintain its peak performance levels over time.

All features

Model Part NumberAFMON1305
BrandApico

Extended Product Information

FAQs

Does this filter come pre-oiled?

No, this filter should be cleaned and oiled with dedicated foam air filter oil before its first installation.

Can I wash this filter in gasoline?

No, gasoline will damage the bonding agents in the foam and cause the filter to degrade prematurely. Use a dedicated air filter cleaner.

How often should I clean the filter?

Cleaning intervals depend on riding conditions. In dusty or dry environments, clean it after every ride. In cleaner conditions, you can clean it every 2-3 rides.

Is this filter reusable?

Yes, it is designed to be washed, re-oiled, and reused multiple times, provided the foam remains intact.

Will this fit my 2005 Montesa 4RT 250?

Yes, this filter is compatible with all Montesa 4RT 250 models from 2005 to 2024.

Troubleshooting

Engine feels sluggish or lacks power

The air filter is likely dirty or over-oiled. Remove, clean with filter cleaner, let dry, and re-oil lightly.

Visible dirt inside the airbox downstream of the filter

The filter may not be seated properly. Ensure the foam edge is correctly positioned against the airbox housing and check for any rips or tears.

Pros and Cons

Pros

  • Direct fitment requires no hardware adjustments
  • Dual-stage foam provides superior engine protection
  • Promotes optimal engine breathability for better power
  • Wide compatibility across many years of Montesa models

Cons

  • Requires proper oiling before first use
  • Must be cleaned regularly to prevent airflow restriction
  • Not a permanent solution; foam will eventually degrade with years of use

Setup, Compatibility & Care

Compatibility

This filter is compatible with the following models:

  • Montesa 315R: 1997-2004
  • Montesa 4RT 250/260/300/301: 2005-2024

Setup and Care

  1. Oiling: Before installation, apply an even coat of dedicated motorcycle foam air filter oil to the entire surface of the filter. Massage the oil in until the foam is fully saturated, then squeeze out the excess.
  2. Installation: Open your airbox, remove the existing filter, and ensure the sealing surface is clean. Insert the Apico filter, ensuring it is seated correctly against the frame to prevent unfiltered air leakage.
  3. Cleaning: Use a specialized air filter cleaner to dissolve the old oil and dirt. Rinse from the inside out with warm water. Allow the filter to air dry completely before re-oiling and re-installing.

Price History

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