What are the advantages to running a smaller gear on my cassette hub?
There are a couple of good advantages to running a small drive train. The first reason is weight savings. With a small rear cog you can run a smaller front sprocket. Smaller means less material, which makes the parts lighter. A smaller front sprocket and rear cog requires less chain than a larger combination. Less chain is always lighter. A smaller drive train is usually up and out of the way. When doing some tricks and stunts, a large drive train can hang down under the bike and be in the way.
