How to Change the Oil in a 2024 Honda CRF450R – MotoSport.com

Shop parts for a 2024 Honda CRF450R Dirt Bike.

Keeping your 2024 Honda CRF450R running strong means regular oil changes. This guide is proprietary to MotoSport.com and covers every step, required tools, model-specific tips, and crucial call-outs. Whether you race or ride trails, proper maintenance will protect your bike’s top-end and extend its lifespan.

Tools and Parts Needed

  • 8mm and 10mm sockets (for engine guard and oil filter cover bolts)
  • Ratchet
  • 10mm Allen key (for drain plug)
  • Torque wrench (set to 9 foot-pounds for filter housing bolts)
  • Honda oil filter (specific for CRF450R 2021+)
  • Honda 20W-50 motor oil (or oil meeting Honda’s specifications for your climate)
  • Replacement crush washer (for drain bolt)
  • New O-ring (for oil filter cover, if needed)
  • Drain pan
  • Rags
  • Funnel
  • Contact cleaner (optional, for cleaning spilled oil)
  • Safety gloves and eyewear (recommended)

Steps to Change the Oil

  • Warm Up the Engine
    Start your CRF450R and let it idle for about one minute to thin out the oil for easier draining.
  • Remove the Left Side Engine Guard
    Use an 8mm socket to remove the guard for access to the oil filter housing.
  • Remove the Oil Filler Cap
    This allows air to enter the crankcase and helps oil drain faster.
  • Drain the Oil
    Place your catch pan under the bike, then use a 10mm Allen key to carefully remove the oil drain bolt and crush washer from the lower rear of the crankcase. Allow the oil to completely drain.
    Pro tip for 2024 CRF450R: Always replace the crush washer to prevent leaks after reinstallation.
    Call-out: The drain bolt is easily stripped. Be gentle when loosening and torquing back in place.
  • Remove and Replace the Oil Filter
    With the oil still draining, use a 10mm socket to remove the two bolts holding the oil filter cover. Take off the cover and remove the old oil filter. Inspect the O-ring on the cover and replace if worn or damaged.
  • Install the New Oil Filter
    Insert the new Honda oil filter (noting correct orientation—open side faces out) and reinstall the oil filter cover. Torque the bolts to 9 foot-pounds.
    Call-out: On CRF450R models, improper torque can cause oil leaks or even strip the threads.
  • Reinstall the Engine Guard
    Replace and tighten the bolts with your 8mm socket.
  • Add New Oil
    Insert a funnel into the oil fill port and add Honda 20W-50 or recommended oil. See your owner’s manual for exact capacity–usually around 1 quart, but always double-check.
    Call-out: Do not overfill. Overfilled oil can cause internal pressure issues or blow-by.
  • Check Oil Level
    Level your bike on a stand. Check the sight glass near the oil filter cover–oil should be visible in the center with the bike upright. Add oil as needed.
  • Run the Engine and Final Check
    Start the engine and let it run for one to two minutes. Shut the bike off, wait a minute, then re-check the oil level and top off if needed. Reinstall the oil fill cap.
  • Dispose of Oil Properly
    Take the used oil and filter to a recycling center.

Model-Specific Callouts for 2024 Honda CRF450R

  • Change intervals: Honda recommends oil and filter changes every 15 hours or after six races for maximum engine health.
  • Drain plug location: Bottom rear of crankcase, easy to reach but prone to over-torquing. Always use a torque wrench.
  • Sight glass: Use the sight glass instead of a dipstick for accurate oil level checking–don’t over- or under-fill.
  • New engine cases (2021+): Design offers easier access to the filter and drain plug compared to older CRF450R models.
  • Always use OEM/quality filters: The CRF450R high-revving motor needs a quality oil filter for engine protection.

Quick Tips

  • Always run the bike briefly after an oil change to allow the new oil to circulate, then recheck and adjust the level.
  • Clean up spills right away with a rag and, if needed, contact cleaner.
  • Keep a maintenance log with date, time, and hours for your next change.
  • Inspect the oil and filter for signs of contamination or metal shavings as an early warning sign of internal issues.

MotoSport.com Note: Follow these steps to keep your 2024 Honda CRF450R in peak condition. Use only quality parts, reference your owner’s manual for specifics, and enjoy a trouble-free ride.

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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.