GX160 & GX200 PERFORMANCE PARTS

GX340 & GX390 PERFORMANCE PARTS

ENGINES

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MINI BIKES

MOTORIZED BIKES

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Speed Calculator

Use this form to calculate your top-speed

  • Enter the maximum RPM of your engine. If unsure, most are rated for 3600RPM.
  • Count the number of teeth on the axle drive sprocket.
  • Count the number of teeth on the clutch sprocket.
  • Measure the diameter of your rear wheel from the ground to the top of the tire.
  • Calculate to show your theoretical top speed, as determined by your configuration.