You saw it happen to Andy Schleck in the 2010 Tour de France, a dropped chain could be the difference between winning and losing. It's also a great way to keep your frame from getting the bottom bracket area to look like the bike in the video. It's simple, it's light, and a fairly inexpensive insurance policy that you'll be happy to have.
If you’ve spent a lot of money on a bike and you do any kind of racing, there is a really cool product that can come in handy called the K-Edge Chain Catcher.
A dropped chain can easily destroy your frame
This happens to everybody: your riding around, you hit a bump as you’re shifting, or your derailleur gets banged around while you are transporting your bike, and you drop your chain. If you drop your chain in a race, you have to get off your bike and put it back on. Not only that, but it can really tear up your frame as well. The K-Edge Chain Catcher will make it so that doesn’t happen to you.
K-Edge Chain Catcher prevents your chain from dropping
With the chain catcher installed, if it ever drops, all you have to do is pedal and it’s back on.
