This high-powered bike light features three high output LEDs for up to 1600 lumens of output. It has seven modes and our Tri-Focus Optics optimizes light output— this creates an ideal beam pattern for high speed. Machined aluminum construction features co

The Thunder Blast headlight is an upgrade from the original Thunderbolt headlight, featuring up to 100 lumen output in solid or flashing modes, and including the new Serfas audible battery warning system.