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The Nitrous Express Three-Cylinder PROTON system with a 2.5 lb bottle is a direct-port nitrous kit for carbureted three-cylinder engines. It includes the PROTON solenoid assembly, braided stainless hoses, Piranha nozzle, fuel pump, relay, microswitch and arming switch. Jetting covers 30–75 HP and the kit ships with a 2.5 lb bottle and bracket for a complete setup.
Nitrous Express Three Cyl Proton Nitrous Kit w/2.5lb Bottle
