Gain complete control over your fuel system to achieve peak engine efficiency when you choose Quantum Fuel Systems direct from J&P Cycles. You absolutely need to add a fuel management product like Quantum Fuel Systems Technology to your bike, and it's a must-have anytime you add aftermarket Exhaust Systems and Air Intakes. With the ability to adjust the air to fuel ratio on your motorcycle, you can measure and plot results to fine tune your ride for maximum performance and efficiency. Not sure what setup is best for your bike? Not to worry, our staff will help you find the parts to take your ride to the next level.