Serfas Thunderbolt 2.0 Rear Light
Best versatile safety light for urban commuters seeking high visibility.
This compact rear light balances high-visibility output with impressive runtime, making it a reliable choice for daily commuters. Its versatile mounting system and intelligent flash modes ensure you stay seen in both bright daylight and low-light conditions without constant recharging.
$40.95
at
Cambria Bike
More Thunderbolt options
Who it's for
- Commuters navigating busy city streets during low-light hours
- Cyclists with multiple bikes who need a portable lighting solution
- Practical riders who prefer streamlined gear without extra cords
Who should skip it
- Long-distance endurance cyclists planning multi-hour night excursions
- All-weather riders frequently cycling through heavy rain or mud
- Urban riders crossing many high-traffic intersections
Performance breakdown
Daytime Visibility
The 50-lumen flash cuts through harsh sunlight with impressive intensity.
Mounting Versatility
Aero post compatibility ensures a secure fit on modern, sleek frames.
Battery Management
Auto-safe mode intelligently preserves power when you need it most.
Mode Customization
Eight distinct settings provide the right light for every riding condition.
Build Compactness
Lightweight design keeps your bike profile clean without sacrificing output.
Operational Convenience
USB rechargeability and remote switch compatibility simplify daily maintenance.
Key Specs
Weight
40 grams
Battery
500 mAh Lithium Polymer
Brightness
50 Lumens
Mounting
Aero post compatible
Power Source
USB rechargeable
Light Modes
8 modes including solid and flash
Intended Use
Cycling
Know before you buy
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Ask Metto anything about the Serfas Thunderbolt 2.0 Rear Light before you decide.
