Air Filter Cleaning – Replacement Guide for 2024 GAS GAS EX300

Shop parts for a 2024 GAS GAS EX300 Dirt Bike.

The 2024 GAS GAS EX300 is a newly redesigned two-stroke machine featuring throttle body injection (TBI) and a high-output 300cc engine–a competitive off-road platform that demands top performance from every component, including the air filter. Proper air filter care is essential for protecting the TBI system and maintaining engine health, especially given its use in rigorous GNCC and trail conditions.

Why Air Filter Care Matters on Your EX300

  • High Output Engine – 50.1 hp and 33.1 lb.-ft. of torque require maximum airflow and filtration integrity to prevent performance loss or engine damage.
  • TBI Sensitivity – The new TBI system on 2024 models is less forgiving of dust and debris than older TPI designs.
  • Off-Road Usage – Frequent riding in dirt-heavy environments rapidly loads the air filter, increasing the need for routine cleaning and inspection.

How to Remove the Air Filter (2024 GAS GAS EX300)

  1. Place the bike on a stand, ensuring stability before beginning any service.
  2. Remove the seat by pulling the quick-release tab at the rear and lifting it off.
  3. Access the airbox. Locate the air filter cage inside–the 2024 EX300 uses a side-mount filter design for tool-free removal.
  4. Unclip the air filter cage retainer and gently pull out the filter with the attached cage. Inspect the airboot for debris; avoid letting any dirt fall inside.

Air Filter Cleaning Steps

  1. Tap the air filter gently to remove loose debris. Do not use compressed air, which can damage the foam.
  2. Wash the filter in a dedicated air filter cleaning solution or mild dish soap and warm water. Always knead, never wring or twist the foam.
  3. Rinse thoroughly until all dirt and cleaning solution are removed.
  4. Let the filter air dry completely away from direct heat or sunlight.
  5. Once dry, apply a high-quality air filter oil evenly, working it in thoroughly to ensure the entire surface is tacky but not overly wet. Remove cloth excess if needed.

Reinstallation – Replacement Instructions

  1. Inspect the airbox and intake tract. Wipe with a clean, damp rag to remove any residual dust or dirt.
  2. Check the air filter cage and sealing surfaces for damage or warping. Replace components as needed.
  3. Fit the oiled filter back onto the cage. Confirm the sealing foam is seated evenly for a complete seal.
  4. Reinstall the air filter assembly, secure the retainer, and ensure no gaps around the perimeter.
  5. Reinstall the seat securely before riding.

How Often Should You Clean or Replace?

  • After Every Ride: In dusty or sandy conditions typical for GNCC or desert races.
  • Every 3–4 Rides: In milder, damp, or loamy soil conditions.
  • Replace: If the foam is torn, the cage is cracked, or the filter fails to hold oil evenly. Always use a filter specifically designed for 2024 GAS GAS EX300 models for best fit and performance.

Model-Specific Tips – 2024 GAS GAS EX300 Owners Take Note.

  • TBI models are more susceptible to dirt ingestion issues. A single oversight during air filter installation or maintenance can allow contaminants into your engine, risking injector or cylinder damage.
  • Always check the air filter seal–EX300 filter boxes use a relatively direct intake path, which increases airflow but reduces the margin for error in sealing and fit.
  • Consider stocking multiple air filters. Racers will often pre-oil several filters and carry spares for race day, minimizing downtime between motos or trail sessions.
  • Inspect your intake boot regularly for signs of dirt intrusion, especially if riding in groups or following other bikes closely, as this increases exposure to airborne debris.
  • The OEM air filter, cage, and sealing gasket are designed for 2024 fitting. Using earlier model filters or generic options is not advised due to year-specific airbox and TBI intake updates.

Finishing Up

Neglecting your air filter on the 2024 EX300 compromises performance and can be costly due to the sensitive, high-flow TBI system. Clean, inspect, and replace as outlined to ensure long engine life and optimal riding experience.

Related Shopping Categories

Shop Air Filters for a 2024 GAS GAS EX300 Dirt Bike.

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Shop Air Box Covers for a 2024 GAS GAS EX300 Dirt Bike.

Shop Tools for a 2024 GAS GAS EX300 Dirt Bike.

Shop Intake Parts for a 2024 GAS GAS EX300 Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.