Speed Analyzer

Determine the correct PerfectFit™ Transmission for your vehicle.

Select Transmission

Engine RPM

Enter your desired RPM for racing or cruising here.

Axle Ratio

Enter your rear axle ratio here.

Tire Height (in)*

Enter your tire height here. Use the Aspect Ratio calculator below if you do not know your tire height.

Ratio

MPH

1st Gear

The estimated speed you will be traveling based on the parameters you established and the transmission you selected.

2nd Gear

3rd Gear

4th Gear

5th Gear

6th Gear

ASPECT RATIO CALCULATOR: Find your tire height by using this tool.

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