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Tehnical Calculators

The calculators below are to assist you in determining an appropriate ratio. These measurements are intended to be a guideline only. Exact results of combining equipment may vary from the estimates provided in this form.

Gear Ratio



Tire Diameter




Tires, Gear Ratio, Speed & RPM

Fill in three of the values, and the empty value will be calculated for you.
this is for transmissions in direct drive, with a ratio of 1:1







Speedometer Gears

Find the Number of Teeth on the
Gear





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