HardRider Motorcycle

Things you should know before purchasing.  
First: Nitrous is the cheapest way to get substantial power, followed by Turbo and lastly Supercharger. Compare Nitrous kits from $390, Turbo kits from $2699 and Supercharger kits from $4500.
Second: Nitrous kits simply bolt right on with the minimum of effort and fits any vehicle, any engine carb or fuel injected. Turbo and Superchargers usually require the engine to come out so a cometic shim spacer gasket can be added to the head to lower compression (not all bikes).
Third: Nitrous is pure additional power used at high rpm's. Turbo is the same, pure power at high rpm's. However, superchargers require the engine to power the supercharger, so even if the supercharger produces a lot of power, about a quarter to one third is used in just powering the supercharger.
Summary: Nitrous can be run very simply just by pressing the button to spray nitrous into your airbox. The price is right and the only real downside is having to fill the bottles, but this really only takes a few minutes.
Turbos are by far the best option for quarter mile or street fighter racing. Turbos use the exhaust to power the twin turbine which rotates the induction part that pulls ambient air into the throttle bodies (two turbines that are directly linked to one another).  Its a very clean system that does not use any engine power to force air into the engine. So it is very efficient and efficiency is important. Many drag racers use a combination of turbo and nitrous. The benefit of ProBoost Turbo kits is they use the stock rad and oil cooler, providing excellent performance, but making road and highway riding better for the motorcycle.
Superchargers provide power through the whole power band but leeches power from the engine, so less power overall. In drag racing, you don't need low end power since your never low in the rpm band. Supercharger builders mostly talk about top end performance because in drag racing times, their quarter mile times are not that great. As an example, TTS Performance Superchargers running Suzuki Hayabusa's running a claimed 300-400hp (approximate), best quarter mile times are 9.4 to 9.6 (per their videos). Our stock tuned busas run those times, while nitrous runs mid to high 8's and turbos from high 5's to low to mid 8's.
PS: For riders who are uncomfortable having their motor pulled or paying more for a supercharger, we recommend:  Purchase a used Suzuki Bandit and  Turbo kit... both combined will most likely be less than a supercharger kit. The Bandit is bolt on and the engine does NOT have to come out. Big saving in time and money.
PSS: Nitrous is NOT Nitro Methane. Nitro methane is a fuel used by top class Drag bikes/cars and is in no way similar or linked to nitrous oxide. In fact they couldn't be more different, as nitro methane is a flammable fuel, while nitrous oxide is a non-flammable oxidiser.