Nitrous Express Proton Fly By Wire Nitrous Kit w/12lb BottleProton Series nitrous systems combine performance, durability and value in a compact and easy to mount module. Proton systems contain high quality, made in the USA, solenoids that are capable of producing 150 horsepower to the wheels. The black anodized aluminum housing not only looks great, it pulls heat away from the solenoids for extreme durability. This Proton fly by wire system includes jetting for 35HP, 50HP, 75HP, 100HP, 125HP and 150HP. This