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Nitrous Express Proton Plus Nitrous Kit w/o Bottle Clothing Brian Crower Connecting Rods -Proton 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 Plus system includes jetting for 35HP, 50HP, 75HP, 100HP, 125HP and 150HP. This system