Gas Gas MC motorcycles utilize HS1 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2005 to 2009 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 HS1 bulb is the sole bulb type specified across all listed model years of the Gas Gas MC for both high beam and low beam headlight positions.
The HS1 is a dual-filament halogen bulb, meaning a single unit contains separate filaments for both high and low beam functions within one housing.
The HS1 operates at 12 volts and carries a 35W/35W power rating, with each wattage figure corresponding to one of the two filaments.
The HS1 uses a PX43t base, a bayonet-style fitting specific to motorcycle headlight applications, which is not interchangeable with common automotive bulb bases such as H4.
The HS1 standard falls under ECE regulation, giving it broad acceptance across European and international markets.
The Gas Gas MC used the HS1 across the 2005-2007 and 2009 model years for both beam positions, indicating a consistent headlight socket specification throughout that period.