Gear Calculator

Top Sprocket:

Bottom Sprocket:

Tach RPM:

Number Of Driver Teeth:

Track Pitch:

Clutch Ratio:

• When it is Non-Overdrive use 1.00
• If Overdrive Ski Doo use .85
• For Overdrive Yamaha, Cat, or Polaris use .90

Clutch Gear Reduction:

• If the RX-1 use 1.1935
• For the EFI Genesis Engines, use 1.2333
• All others use 1.00

Calculate MPH: