The KTM 990 Super Duke uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2005 through 2011 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The KTM 990 Super Duke uses the 9003 bulb for both high beam and low beam headlight positions across the 2005-2011 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both beam functions within one housing.
The 9003 operates at 12 volts and carries a wattage rating of 60W on the high beam filament and 55W on the low beam filament.
The 9003 uses a P43t base, which is a bayonet-style mount with a 43mm collar, and this base type determines physical fitment into the headlight socket.
The 9003 designation follows the ANSI standard used in the United States and Canada, and it is electrically and mechanically equivalent to the international H4 designation.
Because the same 9003 bulb specification applies to both the high beam and low beam positions, a single bulb type serves the entire headlight assembly on the 990 Super Duke.