BMW Motorcycle K100RS Brake Bulb Size

The BMW Motorcycle K100RS brake component utilizes a P21W bulb size for illumination across all listed applications. Data for the specific lighting requirements covers the range from 1983 through 1988.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

YearsUS TypeEU TypeShop
1983-19891156P21WCheck Price

Bulb Specifications

Description Type Shop
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.P21WCheck Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.1156Check Price

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