11-7239 Main jet S&S .078

Designed for S&S carburettors, this .078 main jet is machined from brass to provide accurate fuel delivery at wide-open throttle. It is an essential part for tuning Harley-Davidson engines, allowing the builder to adjust the fuel mixture for peak performance and engine safety. The precision of S&S jets ensures that the air-fuel ratio remains stable, preventing the overheating or power loss associated with incorrect jetting. S&S is the industry leader in aftermarket carburetion, and their jets are the preferred choice for mechanics who demand exact tolerances and reliable operation in performance applications. Sold in packs of 5.