The Yamaha YXM700 Viking headlight bulb uses an HS1 size for both high beam and low beam functions. The replacement chart covers 2014 through 2021 model 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 Yamaha YXM700 Viking uses the HS1 bulb type for both high beam and low beam headlights across all model years from 2014-2021.
The HS1 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments that serve both the high beam and low beam functions within one unit.
The HS1 operates at 12 volts with a wattage rating of 35W/35W, where the first value corresponds to one filament and the second to the other, both drawing equal power.
The HS1 bulb uses a PX43t base, which is a specific bayonet-style mount designed for motorcycle and powersport applications and is not interchangeable with common automotive base types such as H4 or H7.
The HS1 is built to ECE standards, a regulatory framework recognized across Europe and numerous other markets worldwide, governing output, beam pattern, and construction requirements.
Although the HS1 and H4 are both dual-filament halogen bulbs with similar wattage ratings, they use different base configurations and are not interchangeable despite their physical resemblance.