The KTM 450 EXC-R headlight bulb uses a 6235B size for both high beam and low beam applications. The replacement chart covers 2008 to 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 6235B is the sole bulb type listed across all headlight positions in the KTM 450 EXC-R specifications, covering both high beam and low beam functions for the 2008-2011 model years.
The 6235B is a festoon-style bulb, meaning it is cylindrical in shape with contact caps at each end rather than a screw or bayonet base, which is a common format in motorcycle and off-road vehicle lighting applications.
This bulb carries an ANSI standard designation, indicating it conforms to a defined performance and dimensional specification recognized in the United States and Canada.
The 6235B operates at 12 volts, consistent with the standard electrical system voltage found in most motorized two-wheel vehicles of this type.
The blue tinted glass of the 6235B places it in the specialty application category, distinguishing it from clear-glass festoon bulbs that share similar base configurations but are not direct equivalents.
Because the KTM 450 EXC-R uses the same 6235B bulb for both the high beam and low beam positions, the two circuits are served by a single bulb type rather than separate dedicated bulbs for each function.
The specialty application classification of the 6235B indicates that substitution with a standard festoon bulb of similar size may not produce equivalent output or color characteristics, as the tinted glass affects light transmission.