Specialized Flux 250R Taillight - Black

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Product Details

Serious road riders put in serious miles. Most of those miles occur in the daytime, when bright ambient conditions mean you need huge lumens numbers to be seen by motorists. But there's no reason a super-bright taillight can't look the part on the fastest road bikes. You invest in the best road bike technology--you deserve an equally fast taillight. Packing a huge punch with 250 lumens, the Flux 250R taillight is visible at more than 1 mile (1.5 km) in the brightest daytime conditions. Here in Morgan Hill, California we get those conditions all the time—this is the taillight we made for ourselves, and for you. Hybrid spherical lens and Fresnel lens over three high-power LEDs to send lumens for mile, or kilometers.

Three CREE XBD 901 LEDs for maximum brightness and efficiency.

Massive 1000mAh battery recharges via included micro USB cable in 2:15 hours.

Overmolded bezel for excellent side visibility.

Designed to fit round and D-shaped seatposts.

Includes 3 different size EPDM o-rings to fit a wide variety of seatposts. 2 o-rings included per size for spares.

IPX7 waterproof means this light will be there when you need it, even in the hardest rain.

Steady High mode: 100 lumens for 3:00 hours

Steady Low mode: 25 lumens for 12:00 hours

Power Flash mode: 250 lumens for 8:00 hours
SKU: 49120-2500

What Sets Alchemy Apart

The best pre-owned bikes

When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.

Person working on a computer setup operating a carbon fibre testing machine.

Buy with confidence

In-house Active Thermography Carbon Fibre Testing for extra peace of mind on pre-owned bikes.

Learn more about our carbon testing.

Expert Servicing & Ongoing Support

Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.