Quick answer
The Flash Pack headlight/taillight combo is simple to install and use. This FAQ covers mounting, charging, and operating the Flash 300 headlight and Flashback taillight so you can ride safely after dark.
Why a good bike light setup matters
Riding after dark or in low light means you need to see the road and be seen by others. A headlight with a focused beam helps you spot obstacles, while a bright taillight alerts drivers from behind. The Flash Pack combo gives you both in one affordable kit.
Flash Pack setup FAQ
How do I mount the Flash 300 headlight?
Use the included rubber strap mount. Wrap it around your handlebar, thread the strap through the buckle, and pull tight. Position the headlight so the beam points slightly downward, about 10–15 feet ahead of your front wheel. Check the mount is snug before each ride – the rubber can stretch over time.
How do I mount the Flashback taillight?
The Flashback attaches to your seatpost with a similar rubber strap. Place it at a height where drivers can see it clearly, usually just below your saddle. Angle it horizontally so the LED faces straight back. Avoid mounting the taillight behind a bag or fender that blocks the light.
How do I charge the lights?
Both lights charge via USB. Remove them from the mounts and plug the included cable into the micro-USB port. A red indicator shows charging; it turns green or off when full. Charge fully before the first use. Charge after every 3–4 rides if you ride daily in the dark to avoid running out mid-ride.
How do I turn the lights on and switch modes?
Press and hold the power button on each light for about 1 second to turn on. A short press cycles through modes: high, low, and flashing. Press and hold to turn off. Use steady high beam on dark roads and flashing mode in urban areas for extra visibility.
What if the light doesn't turn on?
First, make sure it's charged. Try a different USB cable or port. If it still won't power on, check that the rubber seal over the charging port is fully closed – moisture can cause a short. Contact Specialized support if the issue persists. Always close the charging port cover tightly after charging to keep water out.
Product facts
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Flash Pack Headlight/Taillight Combo: Single-LED headlight with an oval beam pattern. The oval beam spreads light wider than a round beam, so you see more of the road and trail edges without blinding oncoming traffic.
Flash Pack Headlight/Taillight Combo