Black Box Dyno, when paired with the associated hardware, brings minibike performance analysis to the palm of your hand. The app features a speedometer and tachometer, as well as post-run review of gearing, horsepower, torque, top speed and more. This is an essential tool for those who want to see how their bike modifications change performance or for anyone who needs to prove to friends their bike is better. Order the hardware at blackboxdyno.com.