The Buell M2 Cyclone headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers vehicle production years spanning 1997 to 2002.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 bulb is the sole headlight bulb type listed across all model years of the Buell M2 Cyclone covered by these specifications, applying to both the high beam and low beam positions from 1997-2002.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60 watts for high beam output and one rated at 55 watts for low beam output.
Because the 9003 serves both the high beam and low beam positions on the M2 Cyclone, the vehicle uses a single bulb per headlight housing rather than separate bulbs for each function.
The 9003 operates on a 12-volt electrical system and uses a P43t base, which is a bayonet-style fitting with a 43mm flange used to locate and secure the bulb within the housing.
The 9003 is an ANSI-standardized bulb type recognized in the United States and Canada. It is also known internationally as the H4, and these designations refer to the same bulb construction and pin configuration.
The P43t base is not interchangeable with single-filament bases such as those found on 9005 or 9006 bulbs, which use different pin arrangements and are incompatible with a dual-filament socket.