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A cost-effective alternative for upgrading the performance of your bike.
- The intake and exhaust ports are meticulously machined to smooth the surfaces, enhancing the flow char- acteristics of air and fuel to provide enhanced performance
- But it doesnt stop there, oversized (1.875") stainless steel intake valves and stock (1.575") stainless steel exhaust valves rest in reshaped valve seats that improve flow rates
- The combustion chambers have been machined to smooth the surface, and feature a blended radius on the bath- tubs edge to reduce detonation by eliminating hot spots and promoting improved combustion
- The head gasket surface has been milled to maintain stock combustion chamber volume, which results in stock compression when used with Original Equipment pistons
- Compression can be increased with the installation of matched Screamin Eagle high compression pistons
- Heads are assembled with high performance valve springs that support cams with lift up to 585"
Note
Fits Harley-Davidson '99-later Twin Cam-equipped models (except Twin-
Cooled models). '99-'05 models require separate purchase of (2) Intake Flanges P/N 26993-06. Heads are machined and threaded to simplify instal- lation of Automatic Compression Release (sold separately) . All EFI models require ECM calibration (priced separately). For race application only.
