S&S CYCLE V111 Long-Block Engine — 111 cu in, 4-1/8 in × 4-1/8 in, 9.8:1, fits '84–'99 Harley-Davidson big twin – 84-98 Touring, 85-99 Softail, 91-99 Dyna, 85-86 Big Twin, 85-94 FXR, 99 CVO

Fits ’84–’99 Harley-Davidson big twin chassis and custom frames built for Evolution big twin engines.

Engineered short-stroke design reduces vibration and extends service life while featuring a shorter overall height for easier installation.

Delivers about a 30% increase in horsepower and torque over stock, with big-fin cylinders and exclusive oil jets to cool the piston underside.

High-volume, high-pressure oiling and durable three-piece flywheels combine with a performance cam and valve springs for robust throttle response; carburetor and ignition are not included.

Hand-assembled in the USA using high-strength pistons and performance-focused components for long-term reliability. 🔧🔥🇺🇸