S&S Cycle V111 Evolution Long-Block Engine Fits Harley-Davidson Big Twin 1984-1999

S&S Cycle V111 Evolution Long-Block Engine Fits Harley-Davidson Big Twin 1984-1999

Push the 80 cubic-inch Evolution platform to 111 cubic inches with an S&S stroker long-block. The V111 pairs S&S V-Series stroker flywheels with big-bore cylinders, S&S forged pistons, and matched heads and cams in a square-stroke configuration that delivers roughly thirty percent more power than the stock 80 platform per S&S.

Key Features

• Complete 111 cubic-inch Evolution stroker long-block
• S&S V-Series stroker flywheels in a square-stroke configuration intended to reduce vibration vs taller-stroke alternatives
• Big-bore 111 cylinders with S&S forged pistons
• S&S cylinder heads, S&S camshaft, and S&S hydraulic valvetrain
• Available in Wrinkle Black, all-Black Edition, or Natural finish
• Delivers roughly thirty percent more power than the stock 80 Evolution platform per S&S

Technical Specifications

• Displacement: 111 cubic inches (from 80 stock)
• Configuration: Square-stroke S&S V-Series stroker
• Crankcases: S&S
• Flywheels: S&S V-Series stroker
• Cylinders: 111 big-bore
• Pistons: S&S forged
• Cylinder Heads: S&S
• Camshaft: S&S
• Valvetrain: Hydraulic
• Country of Origin: United States

Fitment Notes

• Compatible with Harley-Davidson 1984-1999 Evolution Big Twin chassis across the Softail, FXR, Dyna, and Touring families.
• Also compatible with custom frames built for alternator-style Evolution Big Twin engines.
• Stroker flywheels may require additional primary-side clearance on tight-clearance stock chassis applications – confirm fitment for your specific bike with S&S Cycle or your installer.
• Long-block scope: the installer supplies the carburetor or EFI, ignition, plus chassis-side primary, transmission, and exhaust.
• Refer to the Fitment tab for the full platform breakdown.
• Not affiliated with or endorsed by Harley-Davidson.