Just give your Thunderbolt a quick USB recharge, and you’re ready to paint the town red all night long. Delivering up to 9.5 hours of light, the Serfas taillight features high and low beams, plus two different flash modes. That way you control how much red to shed.
Built from lightweight, highly water-resistant silicone, your Thunderbolt bike taillight rides through any tempest, and weighs only 50g. Thanks to the unique mounting straps, the Serfas LED light mounts just about anywhere—handlebars, stays, forks, racks, helmet—you name it. Best yet, Serfas backs it with a Lifetime Warranty.