Whatstarted as a passion for speed, grew into the best known company name in theV-Twin high performance aftermarket. George J. Smith had to build his own partsto make his motorcycle faster. Now the company he founded manufactures the mostprestigious line of "go fast" v-twin engine parts in the world. Thecompany was started in the basement of his home in Blue Island IL in 1958, andmoved to Viola, WI in 1969. In 2004 an additional facility was opened in LaCrosse, WI.

S&SCycle, Inc. has been in the v-twin high performance parts business for over 50years, specializing in motorcycle parts like high performance motorcycle kitsfor Harley-Davidson® motorcycles. We manufacture a complete line of motorcycleperformance products ranging from motorcycle slip-on exhaust, bolt onperformance intakes, motorcycle big bore kits, or a complete motorcycle engine.

Althoughwe are known for Super Series of performance carburetors and for motorcycleengines, S&S Cycle, Inc. proudly offers sidewinder big bore kits, ourstealth motorcycle air cleaner kit, and many other ways to help you get morehorsepower and torque.

S&Sis currently featuring a full line of performance exhaust for Harley® includingour touring exhaust.  Coupled withS&S Cycle's new performance headers, you ensure that your motorcycleexhaust system is performance orientated and great looking.

Forthe late model performance rider: Everyone needs to take that first step!S&S offers a logical, cost effective 4 step plan for performanceincreases.  These range from small stepslike mufflers and intakes, or getting more horsepower out of your motorcycleengine with big bore kits and more. 

Forthe Vintage enthusiast: With over a half century in the business, we knowvintage and we have the products to prove it in our motorcycle vintage partsoffering. With our age also comes experience and the reputation as one of themost trusted names in performance v-twin parts and motorcycle engines forHarley-Davidson® and other American v-twins.

• Air Filters
• Big Twin 1984-Up
• Body Accessories
• Cables
• Carb & Throttle Body
• Chain & Sprocket
• Chemicals & Lube
• Classic Pre-1984

• Clutches
• Electrical
• Engine
• Engine Components
• Exhaust
• Gaskets
• Hardware
• Ignition

• Manifold
• Manuals
• Model-Year
• Oil Filters
• Oil Tanks & Accessories
• Pistons
• Race Components
• Spark Plugs

• Sportster 1952-Up
• Tools & Shop Supplies
• Transmission
• Victory
• X-Wedge