When you only use a single chainring, it's easy to find yourself wanting more gears to climb or to go faster. You can replace your chainring with a larger or a smaller one, but it also means that you're losing either speed or climbing capability.

In this video, I'm presenting the Efneo gearbox, which increases your gear range by 180% to make it more useful for climbing and riding fast.

You can pick up your own gearbox at www.efneo.com

00:00 The problem of climbing and going fast
00:38 Possible solutions
01:08 Meet the gearbox and options
02:05 The installation
03:38 How it works
04:23 How does it ride and other benefits
05:37 Two things I don't like
06:13 Servicing and warranty
06:35 Efneo Alternative: Schlumpf
07:40 Your bike isn't practical