Hiflofiltro Air Filter for Honda RC51 2000-2006 HFA1920

The stock air filter on your RC51 is a good starting point, but it's a compromise between filtration and airflow. The Hiflofiltro HFA1920 delivers OEM-level engine protection while optimizing air intake flow—critical for extracting maximum power from your V-twin without costly carburetor tuning. This is a straightforward bolt-on upgrade that works with your factory airbox, making it one of the smartest first modifications for RC51 owners serious about performance.

Hiflofiltro's Powerflow media technology balances high-efficiency particle capture with minimal restriction, ensuring your engine breathes easier while staying protected against dust, sand, and contaminants. Installation takes minutes, requires no jetting changes, and delivers noticeable throttle response improvements—especially noticeable on the street or track.

• Direct OEM replacement
• Fits Honda RC51 2000-2006
• Powerflow filtration media
• No carburetor adjustments required
• Optimized airflow design
• High-quality construction
• Bolt-on installation
• Factory airbox compatible
• MPN: HFA1920