KN93 S&S Cycle Knucklehead HD Engine

KN93 S&S Cycle Knucklehead HD Engine

The KN93 is a standard compression 93 engine. It’s available with authentic generator-style crankcases for early-style chassis, primary and transmissions, and alternator/generator-style cases for use with 1970 and later primary covers and late-style transmissions.

Flathead power alternator/generator style KN-series engines are very close in appearance to a stock Knucklehead engine but offer several modern features for more power, better engine life, and improved reliability. Aside from the much larger 93-inch displacement, the main improvement in design is the 1958-1965 style flywheel assembly, which uses a splined sprocket shaft and Timken sprocket shaft bearing, this necessitates the use of a 1955-1964 style inner tin primary cover and primary chain sprocket. S&S vintage rocker arm cover tins are another modern improvement. Alternator/generator cases have a 1948-1999 style front motor mount. It will not fit stock knuckle frames. Generator-style engines have stock motor mounts for 1936-1947 style frames but can be used in 1948-1999 style frames with front motor mount spacer, part #31-2017 (included). Alternator/generator cases require a transmission with a 1970-Up length main shaft, and custom exhaust pipes must be fabricated.

• Natural crankcases and black powder-coated cylinders and heads
• S&S Super E carburetor
• S&S valvetrain solid lifters
• S&S super stock single fire ignition system and polished billet timer
• Alternator and alternator/generator models have the correct length sprocket shaft for 1970-Up primary and transmission
• Alternator/generator engines include an oil filter mount for the generator location
• One year warranty
• Fits 1970-1999 Harley Davidson custom chassis
• Alternator/generator cases have 1948-1999 style front motor mount
• It will not fit stock knuckle frames
• Comes completely assembled and ready to run
• Horsepower: 61.6
• Torque: 83.7