Estimate your quad/bike horsepower

This will give you an estimate of the horsepower produced by your quad or bike if you know the weight of your quad/bike, a quarter mile ET (elapsed time) and the quarter mile speed in miles per hour. With these numbers, calculations can be performed that can provide a good guess of what the rear wheel horsepower is for your quad.

What is the weight of the bike with you on it? pounds
What was the 1/4 mile ET? seconds
What was the 1/4 mile MPH? miles per hour

estimated HP using the ET method
estimated HP using the MPH method.

Calculate your Quads Engine Size

See the Formulas

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