Chainguides were created to keep the chain spinning on the drive train. Funn may not have invented the Chainguide but they've spent a lot of time perfecting it.
If you are running a 1-speed drivetrain system on your bike than this guide will work for you. It is fully CNC machined of 6061 aluminum and suitable for the installation at frames with external BSA bottom bracket cups. The Zippa Lite covers a tooth capacity from 26 to 38 teeth (not compatible with oval chainrings).
Expandable with the Funn Zippa Bashguard (sold separately).
Included in delivery: 1 chainguide
Material: aluminum 6061
Weight supplement: manufacturer's specs