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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)
(Example 70% would = 0.7)
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RPM
3.00
3.27
3.55
3.73
4.11
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RPM
4.30
4.56
4.86
5.12
5.55
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