I have been quite mean with two stars. This light is very bright and so does it's job of warning traffic very well. However, why make it so tiny with such a short battery life? This light only weighs 22g and is tiny. If it was slightly larger with a slightly larger battery a runtime of between 1 to 2 days could be achieved quite easily. A battery life of a few hours might seem good, but this is a product being sold as a daytime running light in reality a commuter might be riding an hour a day, a leisure rider might do 4 hours or more so you end up having to frequently take it off the bike for charging.
Product Details
Trek Flare RT Rear Light
The Trek Flare RT Rear Light represents 3 years of microstudies to fine-tune the rear light beam focus, flash, lumen output, orientation and even the LED colour. Flare RT’s flash pattern now features an even more powerful 90 Lumen max burst in its interruptive flash pattern to be better noticed by other users of the road - visible from over 2 km away. Connect the Flare RT to your Garmin Edge computer and the Bontrager Light Control App for battery status and control.
Be seen in daylight and in the dark with the Trek Flare RT Rear Light. Outputting a maximum of 90 lumens, the battery will last a claimed 6-hours of continuous use. This second version is lighter and smaller than its predecessor yet packs more battery life and lumens. It includes a quick connect bracket that’s offset for proper orientation on an angled seatpost.
Flash modes
- 90 lumens = 6 hours
- 45 lumens = 12 hours
- 5 lumens = 15 hours
Steady modes
- 25 lumens = 4.5 hours
- 5 lumens = 13.5 hours
Includes
- Flare RT Rear Light
- Rear Quick Connect bracket
- Mini USB charging cable
Features
- Specifically designed focus, flash and range for ultimate daytime visibility
- The interruptive flash pattern produces up to 90 lumens for ultimate daytime visibility
- The integrated light sensor auto-adjusts brightness to your environment
- Connect with Garmin® and Bontrager ANT+ devices for always-on, battery status and control
- Flash modes: 90 lm-6 hrs, 45 lm-12 hrs, 5 lm-15 hrs
- Steady modes: 25 lm-4.5 hrs, 5 lm-13.5 hrs
- Confidently ride through wet conditions with an updated USB port and IPX7 waterproof rating
- Battery-save mode provides 30 minutes of additional runtime when battery life reaches 5%
- Rechargeable: Yes
- Battery: 420Li-Poly
- Manufacturer claimed weight: 40 grams
Specifications
- Compatibility (Device / Platform)
- iOS, Android
- Connectivity Type
- Bluetooth
- Power Source Type
- Rechargeable Battery
- Primary Product Type (Electronics)
- Rear Bike Light
- Water Resistance Rating
- IPX4
- Battery Life (Typical Use, Hours)
- 6 hrs
- Beam Pattern / Use
- Daytime Flash
- Charging Interface
- Micro-USB
- Discipline Compatibility
- Road, Commute
- Display Type
- No Display
- Maximum Light Output (Lumens)
- 90 lm
- Mounting Location
- Seatpost
- Mounting Location (Lights)
- Seatpost
- Number of Modes
- 5
- Runtime at Max Mode (Hours)
- 6 hrs
- StVZO Approved
- No
- Weight (g)
- 40 g
- Product code
- 911203 / 54306876522842
Reviews
I bought this light as I had recently had some new bontrager mudguards with a mount. Unfortunately the mount broke within a few weeks and the light didn't survive the following vehicles. Light was good when it was attached though.
Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
Q & A
21 questions, 20 answered
Does this connect with Wahoo bolt V2 for control while riding?
Hi there, This is designed for Garmin only, Many thanks Joe W
Is this light compatible with the mount on the rear of Bontrager saddles?
Hello, This will be compatible with the 'Bontrager Blendr Saddle Accessory Mount' on compatible Blendr saddles. Many Thanks Ashley
how can I replace batterry in Bontrager flare Rt? do you have batterry replaxemts?
Hi there, The Battery in this light is not replaceable, Many thanks Joe W
About Trek
The best bike, ridden everywhere.
Founded in a Wisconsin barn in 1976, Trek has grown into one of the world's most recognised bicycle brands without losing the obsession that started it all: build the best bike, ride it further, share it with everyone.
Trek believes the bicycle is a simple solution to many of the world's most complicated problems. Every bike Trek builds — from the Madone race weapon to the Marlin trail bike — is made with that conviction. More riders, more often, on better bikes.





