The CarBack helps you ride with more confidence with a radar that detects rear-approaching vehicles and a rear light that's visible from up to 2 km away
- 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

Helps drivers see you
Enjoy best-in-class visibility with an interruptive flash pattern that's daytime-visible from up to 2 km away.

Helps you see cars
CarBack Radar can detect rear approaching vehicles from up to 240 m away.



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



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

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

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

Smart phone compatib
Connect CarBack to y

Be seen, and see what's coming
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.