The Serfas Thunderbolt (USL-6) provides 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 16-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.
Charge up, light up & get riding safely at night with the Serfas Thunderbolt.
Charge Indicator Light
Includes Longer Strap To Allow More Mounting Options
Removable Straps Allow Endless Mounting Options
LED Strip Creates A Non-Directional Flood Of Light
Modes: High (90 Lumens): 1.5 hrs, Low (30 Lumens): 4.25 hrs, High Flash (90 Lumens): 2.5 hrs, Low Flash (30 Lumens): 8 hrs
Weight: 54 Grams With Bracket
Battery: 500 mAh Lithium Polymer