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NEW

Trek CarBack Radar Rear Bike Light

Model 5313794

Ride with extra confidence with the Trek CarBack Radar Rear Light. The CarBack's radar helps detect rear-approaching vehicles from up to 240 m and provides audio and visual alerts through paired GPS head units for increased on-bike awareness.

Built with integrated best-in-class Daytime Running Lights that are visible from up to 2 km away, the CarBack is a must-have for every cyclist riding on shared roads.

Product details

CarBack can detect and alert riders of rear-approaching vehicles from up to 240 m away
Compatible with most cycling GPS computers
Pair CarBack with the Trek Accessory app to see a vehicle's rear-approaching and passing distance on your smartphone
Designed with focus, flash and range to be daytime-visible from up to 2 km away
Four light-flash modes: Day Flash 90LM, Day Steady 25LM, Night Steady 5LM and Night Flash 5 LM
Visible fuel gauge LEDs make it easy to see the CarBack's 7+ hour battery status
IPX7 waterproof rating to confidently ride through wet conditions
Includes Quick Connect Plus rear mount and USB-C charging cable

Know what's coming

The CarBack radar and rear light pairs with your smartphone or GPS cycling computer to alert you to detected vehicles and help you stand out on the road. With a simple mount that’s compatible with aero seatposts, a visible battery gauge, a compact profile and industry-leading visibility, CarBack is an easy choice for anyone looking to ride more confidently on shared roads.

Watch video

"... renowned rear bike light is mated to a radar sensor that’s capable of detecting vehicles way before they pass. CarBack has functioned superbly."

"Comes highly recommended and performs at the top tier."

Learn more

"CarBack is a solid product... it works just as well with a phone or a bike computer"

"Trek has combined their fantastic Flare rear light with a rear-sensing radar for a match made in heaven."

Learn more

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Planet Earth is our home and our responsibility – we must do our part to preserve it. Learn how you can join the #GoByBike movement and help make a difference in the future of our planet and all who call it home.

There's a lot more to Trek than making the world's best bikes and cycling gear. Learn more about everything Trek is doing to make the cycling space safer and more inclusive, plus a whole lot more fun.

Enjoy best-in-class visibility with an interruptive flash pattern that’s daytime-visible from up to 2 km away.

CarBack Radar can detect rear approaching vehicles from up to 240 m away.

Watch the video

A four-bar LED battery gauge makes it easy to read your battery status.

Learn more

An IPX7 waterproof rating helps ensure trouble-free operation in all conditions, and the USB-C port makes it quick and easy to charge.

A smaller profile makes it easier to mount CarBack on smaller frames and with saddle bags.

CarBack pairs with most major cycling computers, so you can use it with the GPS head unit you already have.

ANT+ compatible devices

Connect CarBack to your phone through the Trek Accessory App, which will let you see the position of oncoming cars in real time or get audio alerts from your pocket.

Watch the video

A single light that helps drivers see the rider from further away and helps riders get advance notice of approaching cars equals more confidence on the road with fewer surprises.

Download the Trek Accessory App and connect your smart phone and CarBack for added functionality and optimised connection and compatibility.

Get the app

If for any reason you’re not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.

Learn more

Whether you're looking for instructions on how to reset your cycling computer, charging guidelines for your light or anything in between, we're here to help. Click on the link to download the product manual.

Learn more

Battery	Li-Poly 3.7Vdc 2000mAh 7.4Wh
Milliampere-hour (mAh)	2000mAh
Rechargeable	USB-C
Charge time	4 hours
Dimensions	70 L x 50 W x 25 H (mm)
Waterproof Rating	IPX7
Wireless compatibility	ANT+ / Bluetooth
Blendr compatible	Yes
Weight	87g

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.

Weights are based off pre-production products at time of publication. Weights may vary in final production.