Suzuki Motorcycle GSX-R1100 headlight bulbs utilize a 9003 size for both high and low beam functions. The replacement chart covers 1986 to 1998 production years with corresponding bulb specifications.
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 specified for the Suzuki Motorcycle GSX-R1100 across all listed model years, covering both high beam and low beam positions from 1986-1998.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
The 9003 operates on a 12V electrical system and uses a P43t base, which is a bayonet-style mount with a 43mm collar width that physically determines fitment into the headlight housing.
The 9003 designation follows the ANSI standard used in the United States and Canada. This bulb is also cross-referenced as H4 in international markets, though the 9003 designation reflects the North American specification.
Because the same 9003 bulb serves both the high beam and low beam positions on the GSX-R1100, the headlight assembly uses a single-bulb design rather than separate bulbs for each function.
The P43t base is a keyed fitting, meaning the bulb is designed to seat in only one rotational orientation within the housing, which ensures the filaments align correctly with the reflector optics for proper beam projection.
The 5W difference between the high beam filament (60W) and the low beam filament (55W) is a standard characteristic of the 9003 specification and reflects the differing luminous output requirements between the two beam modes.
The consistent use of the 9003 specification across all 1986-1998 model years indicates that the headlight housing and electrical connector on the GSX-R1100 remained compatible with the same bulb type throughout the entire production run covered by these specifications.