Double Nickel Speedometer Testing is a speedometer testing and speedometer certification service in Jupiter, FL. We are a reliable source for a dyno test and horse power test at affordable prices. We understand the importance of being able to determine your vehicle's speeding capabilities and different drive modes. Your car engine power is essential when doing heavy-duty work, hauling, or racing. In addition to vehicle horse power testing, we also test motorcycle horse power! Contact Double Nickel Speedometer Testing today to inquire about our dynamometer testing and horse power certification services.