S&S Cycle Twin Cam Cylinder Head Kit - 79cc - Wrinkle Black - 900-0251

Upgrade your engine's performance with the S&S Cycle 79cc Super Stock® Cylinder Heads. These heads are designed to deliver increased power and improved airflow for your Harley-Davidson engine. Fully assembled and ready to install, these cylinder heads are a perfect blend of performance and reliability.

Description

The S&S Cycle Super Stock® cylinder heads are engineered to work seamlessly with 88" to 103" stock motors, and are particularly well-suited for larger stroker or big bore engines up to 110". Featuring large 1.940" intake and 1.575" exhaust valves, these heads maintain optimal port velocity, providing excellent low and midrange response while ensuring sufficient airflow for stock and moderately larger engines to reach their maximum potential. The high-performance valve springs accommodate camshafts with up to .650" lift, allowing for aggressive cam profiles. Made in the USA, the heads are machined for compression releases (available separately) and can be decked up to 0.060" to further increase compression. Their high port flow design guarantees exceptional performance, both now and with future upgrades. The wrinkle black powder-coated finish adds a sleek, durable touch to your engine.

Features & highlights

• Fully assembled with springs and valves for immediate installation.
• Optimized for 88" to 103" stock motors and ideal for stroker or big bore engines up to 110".
• Large 1.940" intake and 1.575" exhaust valves maximize port velocity and airflow.
• High-performance valve springs compatible with camshafts up to .650" lift.
• Deckable up to 0.060" for increased compression.
• High port flow design for exceptional performance and future upgrades.
• Durable wrinkle black powder-coated finish for a sleek look.

Technical specifications

• Brand: S&S Cycle
• Product Name: Cylinder Head Kit
• Displacement: 79cc
• Material: Aluminum
• Intake Valve Size: 1.940"
• Exhaust Valve Size: 1.575"
• Finish: Wrinkle Black Powder-Coated
• Units: Pair

Important to know

Heads are machined for compression releases (sold separately). Compatible with stock rocker boxes, exhaust, and intake manifolds (unless otherwise noted). If using cams with higher TDC lifts or if heads are decked, piston valve pockets may require re-machining. This kit does not include rocker arm components, intake manifold, or gaskets. Not recommended for use with pistons having a pop-up dome. S&S rocker boxes must be used if S&S compression releases are installed.