Introducing the Spike Devil tire deflation and motorcycle bag. This is the first tire deflation device that fits the storage of all police bikes. Spike Devil is small, however it is not cut down in order to fit a bike. The Police Bike Spike Devil system is available in a loop winder model and also a cord-reel model. All three lengths are available. You can upgrade the system at any time with extra sections or an optional holster for your patrol car.