Honda Motorcycle NSS300 Forza headlight bulbs use HS1 size for both high beam and low beam functions. The replacement chart covers 2014 to 2016 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 Honda Motorcycle NSS300 Forza uses the HS1 bulb type across both its high beam and low beam headlight positions for the 2014-2016 model years.
The HS1 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both high and low beam functions within one unit.
Because the HS1 handles both beam functions, the NSS300 Forza does not require separate bulbs for high and low beam operation.
The HS1 operates at 12 volts with a 35W/35W power rating, where each wattage figure corresponds to one of the two filaments.
The HS1 uses a PX43t base, which is a bayonet-style mount specific to motorcycle headlight applications and is not interchangeable with common automotive bulb bases such as H4 or H7.
The HS1 is built to the ECE standard, a regulatory framework recognized across Europe and many other markets worldwide, governing output, beam pattern, and construction.
Although the H4 is a visually similar dual-filament halogen bulb, its P43t base differs from the PX43t base of the HS1, making the two types physically incompatible despite their resemblance.