Busch and Muller's Topfire helmet lightsare a really neat way to get yourself a bit of extra visibility on the bike. They're easy to fit, effective and weigh next to nothing.
The kit contains four single red LEDs connected to a battery compartment housing a cheap-to-replace 2032 button cell. The LEDs sit in the rear vents of your lid, held in place by double sided sticky tape, and the battery clips to a strap or, in my case, the centre strut of the rear retention system.
Once it's on it stays put. I was worried that the tape wouldn't hold the LEDs in the wet, but there's been no end of wet and they're still there. The battery compartment twists to turn on and off, it's easy to do without looking and with gloved hands, no more difficult than adjusting the retention system on a normal helmet.
There's one mode, flashing (twice a second), and battery life is a claimed 100 hours. I've been using them for a month of night-time commutes home and they're still going strong.
Once the battery dies you can pick up 2032 cells online for next to nothing. The LEDs aren't super bright but they're very effective in the dark and a useful bit of extra visibility now the nights have drawn in. And at 18g you're hardly going to notice the extra weight, are you?
Simple and effective kit for a bit of extra night visibility.
road.cc test report
Make and model: Busch and Muller Topfire helmet lights
Size tested: na
Innovative and stylish. Four very bright red flashing LEDs attached in rear air vents of the helmet with sticky pads. The thin, flat cables can be easily routed to the chin strap via the inner helmet surface to connect to the flat, round cell housing the on/off button that is attached by clips to the helmet strap. Please ensure that the helmet is clean and dry before attaching the LEDs into the air vents
Tell us some more about the technical aspects of the product?
Total weight including battery 18 gms
100 hours plus run time
Easy to replace standard 2032 battery
Did you enjoy using the product? Yes.
Would you consider buying the product? Yes.
Would you recommend the product to a friend? Yes.
About the tester
Age: 40 Height: 190cm Weight: 102kg
I usually ride: whatever I'm testing... My best bike is: Genesis Equilibrium with SRAM Apex
I've been riding for: 10-20 years I ride: Every day I would class myself as: Experienced
I regularly do the following types of riding: commuting, sportives, general fitness riding, fixed/singlespeed, mtb, Mountain Bike Bog Snorkelling, track
Dave is a founding father of road.cc and responsible for kicking the server when it breaks. In a previous life he was a graphic designer but he's also a three-time Mountain Bike Bog Snorkelling world champion, and remains unbeaten through the bog. Dave rides all sorts of bikes but tends to prefer metal ones. He's getting old is why.