By inputting some basic variables, our calculator can help you on your path to determine the most suitable gear ratios for your vehicle/application by calculating the maximum speed possible in each gear as well as the rpm when you shift up a gear from max rpm (Shift Point). We have included 2 gear calculators so that you can compare settings.

As always, if you have any questions at all, please feel free to Contact Us.

How to use:

• Vehicle Presets: A dropdown list of preset values for some common vehicle fitments. Simply select a vehicle, and it will prefill the fields in the calculator (Optional)
• Speed: Choose between mph or km/h
• Tyre Size: Enter your tyre size or Outer Diameter (inches).
• Max rpm: Enter your maximum engine rpm limit
• Final Ratio: Enter your final drive ratio
• Gear Ratio: Enter the gear ratio for each gear
• Results: After entering the required variables, the calculator will display the max speed possible in each gear as well as the rpm when you shift up a gear from max rpm (Shift Point)