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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.
"Trek has combined their fantastic Flare rear light with a rear-sensing radar for a match made in heaven."
Learn morePlanet 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.
Read moreThere'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, more inclusive, plus a whole lot more fun.
Read moreEnjoy best-in-class visibility with an interruptive flash pattern that’s daytime visible from up to 2km away.
CarBack Radar can detect rear approaching vehicles from up to 240m away.
A four-bar LED battery gauge makes it easy to read your battery status.
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.
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.
A single light that helps drivers see the rider from farther and helps riders get advance notice of approaching cars equals more confidence on the road with fewer surprises.
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 moreWhether 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 moreBattery | Li-Poly 3.7Vdc 2000mAh 7.4Wh |
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Rechargeable | USB-C |
Charge time | 4 hours |
Dimensions | 70 L x 50 W x 25 H (mm) |
Waterproof Rating | IPX7 |
Wireless compatibility | ANT+ / Bluetooth |
Weight | 87g |