The Yamaha XF50 C3 headlight assembly uses HS1 bulb size for both high beam and low beam functions. The replacement chart covers 2007 to 2011 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 Yamaha XF50 C3 uses the HS1 bulb type for both the high beam and low beam headlight positions across the 2007-2011 model years.
The HS1 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments, one serving the high beam function and one serving the low beam function.
The HS1 operates at 12 volts with a wattage rating of 35W/35W, where each value corresponds to one of the two filaments.
The HS1 bulb is built to the ECE standard, a regulatory framework recognized across Europe and numerous other markets worldwide.
The HS1 uses a PX43t base, which is a bayonet-style fitting specific to motorcycle headlight applications and is not interchangeable with automotive bulb bases such as H4, despite the H4 sharing a similar dual-filament halogen design.
Because the high beam and low beam positions on the XF50 C3 share the same HS1 specification, a single replacement bulb type covers both functions on the vehicle.