Engineered as a high-performance, ultra-reliable torque monster with a 4-1/8" bore x 4-1/8" stroke profile
Short-stroke performance design reduces cabing vibration, lowers operating friction, and extends total engine longevity
S&S 585 gear drive easy start cams eliminates the stock chain-drive vulnerabilities while guaranteeing easy starts without manual compression releases
High-flow S&S TC3 oil pumps and cam plates deliver ultra-consistent oil pressure, higher feed capacities, and superior scavenging compared to factory setup
Heads are custom machined to use stock-length manifolds, factory EFI throttle bodies, and standard-location air cleaners
Built using heavy-duty 356-T6 aircraft-grade aluminum casting architectures to eliminate case twist under high loads
Notes
Does not include an intake manifold, throttle body, fuel injection, or ignition system. Designed to reuse your existing stock or aftermarket components.
Installation on '07-'16 Harley-Davidson Touring models requires the separate purchase of an S&S oil line kit.
Designed strictly for FL rubber-mount chassis layouts. Will not fit Harley-Davidson Softail models