Gearing Calculator

Looking for the top speed or gear ratio for your kart? To determine the gear ratio necessary for your kart you just need a couple of simple details. Use our calculator to determine the top speed and gear ratio for your tyre size.

Input the tyre diameter, engine rpm, number of teeth on your engine sprocket and the number of teeth on the axle sprocket. Changing the tyre size will dramatically change the top speed so make sure it is correct! (The tyre diameter should be around 10.5inches)
Tyre Diameter In Inches
Engine RPM
Teeth On Axle
Teeth On Front Sprocket
Calculated Results
Drive Wheel Circumference In Inches
Gear Ratio
Maximum Speed In MPH