BEST Rear Lights For Cycling 2025 – Get Seen On Your Bike!

From the best cheap rear bike light to radar bike lights and even a camera bike light. We’ve reviewed tens of rear bike lights and these are the ones that we think are best for your road bike or gravel bike in 2025.

Let us know which is the best bike light in the comments below…

All of the lights featured can be found in our best bike lights 2025 buyer’s guide: https://road.cc/buyers-guide/best-rear-bike-lights-cycling

Links to the full reviews for each light below:

https://road.cc/content/review/exposure-boost-r-reakt-and-peloton-299549
https://road.cc/content/review/knog-plus-rear-light-279169
https://road.cc/content/review/cycliq-fly6-pro-310051
https://road.cc/content/review/269533-moon-cerberus-rear-light
https://road.cc/content/review/cateye-viz-450-rear-light-287905
https://road.cc/content/review/garmin-varia-rtl515-291455

Rear lights have one job getting EC oh and lasting long enough for your ride and not falling off your bike and not annoying your ride buddies and sometimes filming close passes or you know, telling you about traffic. Okay, a few jobs. Then we’ve picked out six of our favorites here and hopefully one of them will be just the job for you. We’ve given each of these lights a full independent review over on road TC along with dozens of others, so check the description for links to those and tell us which you pick in the comments below or what is your favorite light if it’s not made the cut here. Okay, let’s start a small, really small. If you’re a time trialist or hill climber looking for a lightweight option or just wants some visibility without spending a fortune, then the very affordable KN plus is well worth a look as well as being light on the wallet. It’s also lighting weight coming in at a puny 18 grams. It’s an uncomplicated rear light that weighs almost nothing, puts out a useful 20 lumens in its highest mode despite its size. It’ll run for nearly two days on the lowest flashing mode and there are five modes to choose from In total, you don’t need a charging lead for this light. It just plugs straight into A USB socket, so you should be able to top it up pretty much anywhere. The mount is magnetic and it’s nice and simple and you can even clip it to your jeans, genes for the money. This little nog is pretty hard to beat, but what if you want more power? Well, how about this, the cat eye vis range of rear lights are well-made units that check out lots of light and last for years and the vis four 50 is the brightest of the lot. Now the full 450 lumen power is reserved for an intermittent flash in the daytime hyper flash mode. Stick that on and you’ll be visible from space or half a mile away anyway. If you’re the kind of rider that enjoys a dual carriageway time trailer or an a road commute, then this light should be on your shopping list. It’s not just about the maximum amount put though. The VIS four 50 has a nice mount. It’s easy to use and the run times in the lower modes are really long if you don’t need the eye melting power of this one. Then there are vis models all the way down to a hundred lumens and we reviewed a bunch of them and they’ve all been good Radar lights can sense cars approaching behind you and send a warning to your GPS head unit. The garment Vari RTL 5 1 15 is the pick of the crop at the moment because it most reliably does that from up to 140 meters away often well before you hear them and it does it for the longest of any of the radars we’ve tested. The battery in the vari gives you 16 hours of runtime. In day flash mode when it sensors a car approaching the light will adapt its flash pattern to help make you as visible as possible and that’s really visible because the LED in the Vari is extremely bright. It’s an expensive unit and it’s not without a few n*****s, including a micro USB port when the world has moved on to USBC. But the robust build reliable alerts, high quality rear light justify the spend knowing the cars are there is one thing, but what if they close pass you and you want evidence of that to send to your local plot. For us, the cyclic Fly six Pro is currently the pick of the bunch where rear facing cameras are concerned. It packs a 4K camera with electronic image stabilization and a 145 degree field of view and it combines that with a 100 lumen bike light to get you seen. It’ll shoot for about five hours with the light on flashing or over six on camera only mode, which should cover your whole club run the fly six is wifi enabled and there’s a desktop and a smartphone app to work with your footage. It comes with a nice secure amount and it’s IP 67 waterproof, so even the worst UK weather shouldn’t be a problem. It’s expensive and it’s heavy for a rear light, but it’s currently the best you can get if you’re riding mostly in town. Then being visible from the side is almost as important as being seen from behind the moon. Cerus has a three sided design that gives you unbeatable side visibility. This light is as bright from the left or the right as it is from the rear. It’s a versatile light too. It has a clever hinge system that makes it compatible with all shapes of seat posts. Given its form factor, it’s probably nice and aerodynamic too, although we didn’t take it to the wind tunnel. Moon has sensibly kept the mode count to five with two constant and three flashing outta the box. You only get about three and a half hours of battery life on constant, but you can use the button on the light as a dimmer function that allows you to fine tune the output to extend the battery life or to spare your riding mate’s eyes or both. All of these lights are great, but if we had to pick just one real light to live with, then we’d pick the exposure. Boost R with React and Peloton, this is a really high quality rear bike light. You get exceptional visibility, impressive runtimes and advanced features. It builds on the successful trace R doubling its battery life with only a 10 gram increase in weight and it’s not like that light was heavy. You get 80 lumens maximum output with six modes that give you runtimes from six hours in the brightest static mode to 48 hours in the lowest flash mode. React is probably the light’s best feature, which adapts to the light conditions and it also flares up when it sensors that the rider is breaking. It also has a Peloton mode which recognizes when there’s a front light behind you and dims itself to save dazzling your ride buddies. It’s very well made and very waterproof and mounting is secure. There’s no getting away from the fact that this is an expensive line, but it’s robust. Build smart features and British craftsmanship justify the cost. Sometimes you get what you pay for however you ride. One of these six lights should be just the ticket. If you’re heading out after dark or want to be more visible in daylight hours, which would be your pick. Let us know below and as ever, if you’ve enjoyed watching this, don’t forget, hit the thumbs up and subscribe to the channel to see more from us. We’ll see you next time.