If your bike specifications differ from the specs given from the pull down menus, please manually enter below.
When the changes are made below, these take precedence over the pull down menus.

Please keep in mind the the calculations are maximum speeds based on the mechanical gear ratios of your specific combination. If your engine does not have enough horsepower/torque to maximize the gearing used, over gearing or undergearing your motorcycle may actually reduce performance.

These calculations should only be used as a reference when making sprocket purchases.