S&S Cycle Twin Cam Cylinder Head - 89cc - Silver - 106-3255

Upgrade your Harley-Davidson's performance with S&S Cycle 89cc Super Stock® Cylinder Heads. These heads are designed to boost power and efficiency, especially in touring bikes and heavier vehicles. Experience improved throttle response and increased horsepower throughout the RPM range.

Description

The S&S Cycle Super Stock® cylinder heads are engineered to maximize airflow and combustion efficiency. Featuring large 2.000" intake and 1.605" exhaust valves, these heads maintain optimal port velocity for excellent low- and mid-range response while providing ample airflow for engines up to 110 cubic inches. The combustion chamber design delivers a slightly higher than stock compression ratio, perfectly suited for larger displacement engines. These heads are compatible with stock rocker boxes, exhaust systems, and intake manifolds, simplifying the upgrade process. Made in the USA, these cylinder heads deliver exceptional quality and performance, ensuring reliability and longevity for your high-performance engine build. With an impressive 264 CFM intake port flow compared to the stock 182 CFM, you will notice a significant improvement in engine breathing and overall power.

Features & highlights

• Fully assembled with high-performance valve springs, ready for installation.
• Optimized for '06-'16 engines with stock crankcases, ideal for touring and heavy vehicles.
• Enhanced airflow with 2.000" intake and 1.605" exhaust valves for improved engine breathing.
• Designed for engines up to 110", maximizing performance potential.
• Compatible with stock rocker boxes, exhaust, and intake manifolds for easy installation.
• High-performance valve springs accommodate camshafts with up to 0.650" lift.
• Made in the USA, ensuring top-quality craftsmanship and reliability.

Technical specifications

• Brand: S&S Cycle
• Displacement: 89cc
• Intake Valve Size: 2.000"
• Exhaust Valve Size: 1.605"
• Material: Aluminum
• Finish: Silver, Powder-Coated
• Units: Pair

Important to know

These cylinder heads are not compatible with S&S compression releases in late-model Twin Cams with Harley-Davidson® ACR (Automatic Compression Release) already installed. They are also incompatible with '14-'16 FLHTK/FLHTKL, FLHTCUTG Twin-Cooled motors or '17 touring models. Not for models with OEM compression releases. If using S&S compression releases, S&S rocker boxes must be used.