Busch & Müller Toplight Line Brake Plus Rack Mount Generator Taillight
The Toplight Line Brake Plus senses when the bike slows under braking and glows brighter, just like the brake lights on an automobile. And it has all of the other features of the Toplight Line Plus taillight; 50mm bolt spacing, button to stop the standlight, etc.
Wiring is not packaged with this light. Either LT203 or LT204 noted below will work.