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Compression Calculator  Displacement calculator 
  Horsepower Calculator 
RPM Calculator ET Calculator

MPH Calculator

Rear Axle Gear ratio (i.e., 3.08, 3.55, etc.)
Transmission Gear ratio (i.e., 2.54, 1.43, 1.00, etc.)
Tire diameter in inches (24.5, 26, 27.5, etc.)

The speed in MPH is miles per hour.

The same tire and RPM will give the following speeds based on the following gear ratio changes.

2.59 2.73 3.08 3.36 3.55 3.70 4.11 4.56



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