S&S Cycle V80 Complete Engine for 1984-1999 Harley-Davidson Big Twin
For riders who want everything sorted before the first kickstand touch, the S&S V80 complete engine delivers a ready-to-ride solution. It turns an Evolution-era chassis with a tired stock feel into something genuinely satisfying to ride again – snappy, predictable, and backed by everything S&S puts into purpose-built performance engines.
Key Features
- Fully assembled carbureted crate engine – includes S&S carburetor, performance cam, and high-flow heads
- Fits the same 1984-1999 Big Twin chassis as the stock Evolution motor without modification
- Available in Natural aluminum or Wrinkle Black powder-coated finish
- Designed for closed course competition use
- Backed by S&S Cycle quality and the expertise of a manufacturer that has been building V-twin performance engines since 1958
Technical Specifications
- Displacement: 80ci (1310cc)
- Engine Type: Air-cooled V-twin, Evolution architecture
- Assembly: Complete engine – includes S&S carburetor, cam, and high-flow heads
- Compatible Frame: 1984-1999 Harley-Davidson Big Twin
- Use: Closed course competition only
Fitment Notes
- Intended for closed course competition use only – confirm applicable laws before street registration
- Designed as a direct replacement for the factory 1984-1999 Big Twin Evolution motor
- Verify fitment for modified or custom frames – stock Big Twin mounting points required
- Review the Fitment tab for complete year and model breakdown






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