Sprocket-to-Sprocket Distance Calculator

So you've decided to change your gearing. Great. But how many chain links will you need? How will the combination of sprocket sizes and chain length affect your wheelbase?

Enter in values for chain length (even numbers, please), front sprocket teeth, and rear sprocket teeth in one of the rows below, and click Calculate. Use additional rows to see the effects of different combinations.

Ideally, you want to keep the sprocket-to-sprocket distance as close to stock as possible. Shorter that stock will result in a shorter wheelbase and easier turn-in, at the expense of stability and being more wheelie-prone. Longer than stock will result in a longer wheelbase for better stability and keeping the front end down, at the expense of ease of turn-in. Note: you want to avoid choosing a sprocket and chain combination that will make the sprocket-to-sprocket distance greater than about 26 inches -- this puts the axel almost as far back as it will go in the swingarm, and does not leave you much room for tightening up chain slack.