Type in motorcycle alarm, there are some average ones on there which I had one on my runner and one currently on my cbr. Think I had the cyclone alarm or the hawk alarm, very easy to fit. They are shock and movement sensors then it goes off, you can also wire in an immobiliser and remote start.
^^^^That looks a pretty good alarm, I'd like to be able to get an alarm with the voice message thing, but be able to record your own warnings on it...with like "touch it again and your legs will be broken!"...you get the jist :w00t: