The beauty of a chain final drive is that it can easily be altered to suit the rider’s purposes. Shorter gearing makes the bike leap out of corners by raising the rpm that the engine is spinning at any given road speed. Stunters like this because it helps them with their tire-smoking, front wheel-lofting antics. Road racers like it because they can have their bike’s power delivery set to work at its best on an important section of track.

Making the gearing taller will lower the rpm throughout the rpm range, which is why you will find this kind of gearing in use on the airport runways, dry lake beds, and salt flats of the world.

Bottom line: Know why you’re changing your gearing and how it will affect your motorcycle across the rpm range.

Ten Steps To A New Chain And Sprockets