I installed a 13 tooth front sprocket on my Mojave and really noticed a difference. I had already installed a Dynojet kit and rode it around with stock gearing so I could tell that the 13 tooth let the quad rev out a little less and gave it a higher top speed. It is a touch weaker right off the bottom but nothing to worry about since it makes 2nd and 3rd gears more useful because they seem wider and can better take advantage of the Mojave's need to rev to make power. With stock gearing it seemed like I had to shift out of 2nd and 3rd early just because it would rev out too quickly.

In 5th wide open, things are more pleasent since the machine is no longer reving its guts out. My next mod will be an IDS2.