Gear Ratio Calculator

Use our calculator to determine approximate gear ratio to achieve desired RPM at selected cruising speed. (Default is 55MPH).

Enter OD ratio with a decimal point
(Example 70% would = 0.7)

Other Ratio Options

RPM

3.00

3.27

3.55

3.73

4.11

RPM

4.30

4.56

4.86

5.12

5.55


    

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