German-designed Sigma Sport lights offer outstanding beam-per-dollar—our way of saying they make a bright, useful bike headlight at a high-value price. With it’s nearly instant-on mounting system, the Sigma Sport ILLUX is your quick-trip after-dark bike light. And with the same mounting system as the ILLUX, the Sigma Sport TriLED bicycle light is powerful enough to be your everyday commuter or back-up off-road bike light.