S&S Cycle Jet Kits

Dial In Your S&S Carb with the Right Jet Kit

When it comes to carburetor tuning for Harley-Davidson and V-twin motorcycles, few names carry more weight than S&S Cycle. Founded in 1958, the Wisconsin-based manufacturer has spent over six decades engineering performance parts with a racing pedigree that runs from the Bonneville Salt Flats to American Flat Track championships. That same obsession with precision carries directly into their jet kits — one of the most essential tools for getting the most out of an S&S carburetor.

Why Jetting Matters for S&S Carburetors

An S&S carburetor is a finely tuned fuel delivery system, but “out of the box” jetting is inevitably a compromise. Riders at high altitude, those running performance exhaust or air cleaners, and even riders of different builds may find that the stock jet sizing leaves power on the table — or causes the engine to run rich. S&S jet kits exist precisely to solve this problem, giving you the ability to optimize fuel delivery across every part of the RPM range.

S&S carburetors use both an intermediate jet (governing low-RPM behavior below approximately 3,000 RPM) and a main jet (controlling high-speed fuel delivery). Getting both dialed in correctly eliminates symptoms like popping, backfiring, fouled plugs, and flat acceleration — the hallmarks of a carburetor that’s not jetted for your specific setup.

S&S Master Jet Kits: A Full Range at Your Fingertips

S&S Cycle offers jet kits designed specifically for their iconic Super B, Super E, and Super G carburetors — the same carbs trusted by countless Harley-Davidson Big Twin and Sportster owners for decades. Their Master Jet Kit provides a comprehensive selection of jet diameters in a single package, allowing you to go leaner or richer in virtually any application without hunting down individual jets one at a time. The standard jet kit includes 11 jets, while the Master Jet Kit steps up to 19 jets for riders who want the widest possible tuning range. All S&S jet kits are Made in the USA, consistent with the brand’s long-standing commitment to domestic manufacturing.

Who Needs an S&S Jet Kit?

• Riders who have added a performance exhaust system or upgraded air cleaner
• Motorcyclists who frequently ride at varying altitudes or in extreme weather conditions
• Those troubleshooting surging, popping, backfiring, or poor throttle response
• Builders setting up a fresh S&S Super E, B, or G carburetor on a custom or restored bike

Because S&S publishes detailed carburetor tuning guides — walking riders through methodical main jet and intermediate jet testing — even home mechanics can confidently work through the jetting process with the right kit in hand. Pair an S&S jet kit with the full breadth of S&S Cycle performance parts and browse the complete selection of jet kits to find the right solution for your carburetor setup.