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Ramp Calculator

To help make sure your motorcycle is loaded without incident, Black Widow Pro is pleased to offer a Ramp Calculator that will take the guesswork out of picking the right ramp.

How to use Calculator

To use Black Widow Pro Ramp Calculator, you’ll first have to take some measurements. Grab a tape measure and make sure to record the length (to nearest inch) of your Motorcycle’s wheelbase, ground clearance, and the height of the loading surface(or rise).


Measure Axle to Axle

2Ground Clearance

Measure the lowest point of the Motorcycle to the ground

3Loading Surface (Rise)

Measure from the top edge to the ground

Please enter wheel base.
Please enter Ground Clearance.
Please enter Loading Height.
Minimum ramp length = ft. (1:12 Slope)

After calculating what length you need, find your ramp from the following categories!