Description
Upgrading to S&S CYCLE cylinder heads transforms your Big Twin engine’s breathing efficiency and power delivery, unlocking measurable gains across the RPM range. These fully assembled heads feature premium stainless steel valves and high-lift springs engineered to support aggressive cam profiles and forced induction builds. Whether you’re building a street screamer or race-focused powerplant, S&S heads provide the foundation for serious horsepower without compromise.
What’s Included:
- Fully assembled cylinder head kit
- Stainless steel intake valves
- Stainless steel exhaust valves
- High-lift valve springs
- .640″ maximum valve lift
- Intake manifold
- Made in U.S.A.
Technical Specifications:
- Application: Harley Big Twin
- Year range: 1990–2004
- Material: Ductile iron casting
- Valve type: Stainless steel
- Reuses: Stock head bolts
- Installation: Bolt-on assembly
What You’ll Need Separately:
- S&S Super Stock pistons (10:1 ratio)
- Head gasket kit
- Base gasket kit
- Exhaust pipe gaskets
