Description
Rather than sinking time and money into rebuilding an aging 80″ Evolution engine, the S&S Cycle V80 Series delivers a complete, factory-fresh replacement that bolts directly into your 1984–’99 Harley big twin chassis. You’ll gain measurable power gains without the downtime of a rebuild, while leveraging your existing carburetor, ignition, and air cleaner setup to keep costs down. This is the smart upgrade path for riders ready to move beyond stock performance.
KEY SPECIFICATIONS
- Direct bolt-in replacement
- 3-1/2″ bore x 4-1/4″ stroke
- 8.4:1 compression ratio
- S&S performance cylinder heads
- 508 cam profile
- Forged rocker arms
- 585 valve springs
- Flat-top cast pistons
- S&S standard oil pump
- Stock-height design
- Fits stock-length manifolds
- EFI compatible (tuning required)
- Wrinkle black finish
- Made in USA
- Two-year warranty
- Carburetor and ignition not included
- Fits 1984–’99 H-D big twin
- Fits Evolution-based custom frames
Wire transfer required to order. Does not ship free. Call to order 231-767-5055. Excluded from additional discounts.






