Air Filter Cleaning – Replacement Guide for 2022 Honda CRF450R-S

Shop parts for a 2022 Honda CRF450R-S Dirt Bike.

The 2022 Honda CRF450R-S stands out for its race-proven performance, robust engineering, and advanced features such as Programmed Fuel Injection (PGM-FI) with a 46mm downdraft throttle body and a dual-stage foam air filter setup for maximum engine protection and airflow. Keeping your air filter in top shape is critical for the longevity and reliability of this high-performing machine. Here's your exclusive MotoSport Air Filter Cleaning – Replacement Guide designed specifically for CRF450R-S owners.

Why Air Filter Maintenance Matters for the CRF450R-S

  • Power optimization—The engine relies on clean, unrestricted airflow. Clogged filters reduce horsepower and responsiveness.
  • Engine protection—Dirt, sand, and debris can bypass a compromised filter and cause abrasive engine wear or damage.
  • Best practices—Honda's advanced foam filter design offers superior filtration, but only if maintained regularly.

How to Clean the Air Filter

  1. Remove the seat by undoing the bolts, then access the airbox.
  2. Carefully extract the air filter, avoiding debris dropping into the intake. Inspect for excess dirt or obvious damage.
  3. Pre-clean by gently tapping the filter to remove loose dust.
  4. Wash thoroughly
    • Use a dedicated foam filter cleaner or mild, non-petroleum-based soap.
    • Submerge and massage gently. Never wring, twist, or aggressively scrub as this can tear the dual-layer foam.
    • Rinse with clean water until all cleaner and dirt are gone.
  5. Dry completelyLay flat in a cool, shaded area. Do not use compressed air, as excessive pressure may damage the foam's structure.
  6. Re-oil the filterApply a high-quality foam filter oil to all surfaces, working it in for complete coverage. Pay special attention to seams and edges for the best seal.
  7. Reinstall the filter
    • Inspect the sealing ring for cracks or improper fit.
    • Ensure the filter seats flat and evenly against the airbox surface for a dust-proof seal.
  8. Replace the seat and fasten all bolts securely.

When to Replace Your Air Filter

  • If tears, holes, or significant wear are visible in the foam layers, replace immediately.
  • Factory filters or premium aftermarket replacements like Twin Air, Maxima ProFilter, or Tusk First Line are designed specifically for 2017-2022 CRF450R-S models.
  • Heavy use in dusty or sandy environments? Inspect and clean after every ride, and replace as needed.

2022 CRF450R-S Owner's Notes

  • The CRF450R-S uses a dual-layer foam air filter engineered for optimum dust separation and airflow under demanding conditions. This design maximizes power while preventing fine particle ingress. Matching OEM or equivalent foam specifications (45/65 PPI) ensures your engine remains protected.
  • Pay special attention to the robust sealHonda's thick, flat foam greaseless sealing ring is critical for keeping the airbox dust-free. Always verify ring integrity before refitting.
  • Observe the exclusive filter adhesive and flame-laminated foam construction. If glue seams are deteriorating or foam appears de-laminated, replace promptly.

Expert Tips from MotoSport

  • Always keep a spare filter pre-oiled and ready in a resealable bag for quick swaps.
  • Use gloves during cleaning & oiling to avoid contaminating the filter with hand oils or dirt.
  • Consider upgrading your filter for high-flow, harsh riding conditions—aftermarket filters like Twin Air and Tusk First Line offer enhanced particle separation and durability tailored for the CRF450R-S.

Proper air filter care keeps your 2022 Honda CRF450R-S running stronger, longer, and ready for every terrain. Trust MotoSport for OEM and compatible replacement parts & accessories.

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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.