S&S Cycle Twin Cam Super Stock Cylinder Head - 89cc - Black - 90-1106

Upgrade your Harley-Davidson's performance with S&S Cycle 89cc Super Stock® Cylinder Heads. These heads are designed to provide improved airflow and combustion, resulting in increased horsepower and torque. Ideal for touring bikes and other heavy vehicles, these heads will unleash the full potential of your engine.

Description

The S&S Cycle Super Stock® Cylinder Heads are engineered for '99-'05 engines with stock crankcases and are perfectly suited for motors over 103" or those utilizing high-compression pop-up pistons. Featuring large 2.000" intake and 1.605" exhaust valves, these heads maintain optimal port velocity, delivering excellent low- and mid-range response while providing ample airflow for larger engines to achieve their maximum potential. The combustion chamber design creates a slightly higher than stock compression ratio, manageable for larger displacement engines. With intake ports flowing at 264 CFM compared to the stock 182 CFM, these heads significantly improve engine breathing. These heads are compatible with stock rocker boxes, exhaust, and intake manifolds ensuring ease of installation. Built with high-performance valve springs, these heads accommodate camshafts with up to .650" lift, further enhancing performance capabilities. Finished with a durable wrinkle black powder coat, these heads offer long-lasting protection and aesthetic appeal.

Features & highlights

• Fully assembled with springs and valves for easy installation.
• Optimized for '99-'05 engines with stock crankcases, perfect for touring bikes.
• Large 2.000" intake and 1.605" exhaust valves enhance airflow and performance.
• High-performance valve springs support camshafts with up to .650" lift.
• Intake ports flow 264 CFM, significantly improving engine breathing.
• Compatible with stock rocker boxes, exhaust, and intake manifolds.
• Durable wrinkle black powder-coated finish for long-lasting protection.

Technical specifications

• Brand: S&S Cycle
• Product Name: Cylinder Head Kit
• Displacement: 89cc
• Material: Aluminum
• Color/Finish: Wrinkle Black, Powder-Coated

Important to know

Included: Heads and four long headbolts. Reuse four long OEM headbolts.

Requires: S&S rocker boxes must be used if S&S compression releases are installed.