Air Filter Cleaning & Replacement Guide for 2014 Honda CRF125FB
Shop parts for a 2014 Honda CRF125FB Dirt Bike.
Maintaining the air filter on your 2014 Honda CRF125FB is critical for optimal engine performance – especially for off-road riders who face dust, dirt, and debris. The CRF125FB, also known as the "Big Wheel" model, utilizes a dual-stage foam filter designed to maximize filtration and airflow, ensuring your engine receives clean air while keeping harmful particles out. Routine cleaning or replacement prevents power loss, excessive engine wear, and running issues.
Proprietary MotoSport Air Filter Cleaning – Replacement Steps
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Remove The Seat
Use the side bolts to remove the seat – this provides access to the airbox. -
Take Out The Air Filter
Loosen the filter retainer wing nut and carefully pull the filter from the airbox. Inspect for tears, shrinkage, or serious grime – replace if damaged. -
Clean The Airbox
Wipe any dirt or oil from the airbox with a clean, dry cloth. Pay attention to the sealing surface that matches the filter for a perfect seal. Prevent dirt from falling into the intake by covering the opening while cleaning. -
Clean The Filter
- If reusing the filter, hand-wash it in a bucket with a specialized foam air filter cleaner or mild detergent. Gently squeeze, never wring or twist, to avoid damaging the foam layers.
- Rinse thoroughly until water is clear, then allow to fully air dry.
- When dry, apply air filter oil evenly over the entire surface. Work oil into both foam layers for total coverage. Excess oil should be gently squeezed out.
- Check that the glued seam is intact – exclusive foam adhesives on Honda filters resist breakdown for longer filter life.
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Install Replacement Filter
If the filter is excessively dirty, torn, or the glued seam is compromised, install a new filter. Confirm a flat, greaseless sealing ring contacts the airbox for maximum dust protection and engine efficiency. -
Final Assembly
Fit the cleaned or new filter into the airbox, tighten the wing nut to secure it, then reassemble the seat.
2014 CRF125FB Air Filter Features & Notes
- Dual-Stage Foam Filters – Outer coarse foam traps large dirt, while inner fine foam catches fine particles for superior protection.
- One-Piece Design – Honda filters are flame-laminated, eliminating gaps where dust can enter the engine.
- Fits Big Wheel Models – The CRF125FB filter is vehicle-specific – confirm you buy filters compatible with your exact model year (2014-2025 CRF125F/FB).
- Airbox Easy Access – Honda designed the airbox for straightforward filter changes and thorough cleaning.
- Periodic Cleaning – Clean or replace after every 5–10 hours in dusty conditions, or after each ride in extreme environments.
Why Air Filter Care Is Essential For Your CRF125FB
- Power – Longevity – Clean airflow means more engine power, smoother throttle, and less chance of internal wear.
- Unique Chassis Impact – The CRF125FB's increased wheel size and chassis geometry expose the air intake to higher airborne debris, demanding vigilant air filter care.
- OEM Fit – Reliability – Always use a model-specific foam filter (Twin Air, UNI, or OEM spec) for correct sealing and airflow.
Follow this MotoSport guide to keep your 2014 Honda CRF125FB air filter spotless – ensuring reliable rides and a longer-lasting engine.
Related Shopping Categories
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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.
