S&S Cycle KN93 Generator-Style Knucklehead Engine Fits Harley-Davidson Big Twin 1936-1965
Drop a turnkey knucklehead-style powerplant into your vintage build with the S&S KN93 OHV crate engine. Authentic generator-style crankcases, gloss black overall finish, and modernised internals pair the look of a 1936-1965 OHV Big Twin with the reliability of contemporary S&S engineering, all assembled and preset out of the crate.
Key Features
- Complete assembled 93 cubic-inch knucklehead-style crate engine with authentic generator-style crankcases
- 1958-1965-style splined sprocket-shaft flywheel assembly with Timken sprocket-shaft bearing for modern durability
- Die-cast aluminum lower rocker covers held by valve-spring pressure, with a special gasket and o-ring seal on the bottom of the lower tin
- Improved-design oil-return lines that replace the steel brazed-in hard oil-return lines used on stock tins
- S&S Super E carburetor preset from the factory
- S&S Super Stock electronic ignition system preset from the factory
- Front motor-mount spacer included for fitment to 1948-1965 chassis
- Standard 93 cubic-inch displacement; gloss black overall finish
- One-year S&S warranty
Technical Specifications
- Displacement: 93 cubic inches
- Compression: Standard
- Crankcases: Generator-style (1936-1965 chassis-compatible)
- Flywheel Assembly: 1958-1965-style splined sprocket-shaft with Timken bearing
- Cylinder Heads: S&S Super Stock knucklehead-style
- Rocker Covers: Die-cast aluminum lower tins with improved oil-return lines
- Carburetor: S&S Super E (preset)
- Ignition: S&S Super Stock electronic (preset)
- Included Hardware: Front motor-mount spacer for 1948-1965 chassis fitment
- Finish: Gloss black overall
- Warranty: 1 year
- Country of Origin: United States (Viola, Wisconsin)
Fitment Notes
- Compatible with Harley-Davidson 1936-1965 OHV Big Twin (Knucklehead) chassis with the stock generator-style primary.
- Extended fitment to 1948-1965 Big Twin chassis via the included front motor-mount spacer per supplied dealer data; verify chassis-specific geometry before installation.
- A 1955-1964-style inner tin primary cover and primary chain sprocket are required for installation and are supplied by the installer.
- Chassis-side primary, transmission interface, exhaust, and ignition wiring harness are supplied by the installer.
- Refer to the Fitment tab for the full chassis breakdown.
- Not affiliated with or endorsed by Harley-Davidson.
