Serfas’ Thunderbolt (USL-6) gives you high-performance and endless mounting options for a great price.
If you’re riding at night, let Serfas guide the way with our Thunderbolt (USL-6) Headlight. The 15-micro (double strength) LED strip puts out 90 lumens, giving you plenty of light to safely arrive at your destination.
What’s your mounting pleasure? The USB-rechargeable Thunderbolt can be mounted virtually anywhere on the front of your bike—from the handlebars to the fork. It’s your ride, your call.