S&S CYCLE 89 cc Super Stock® Cylinder Heads — 89 cc, Silver, powder-coated – 06-17 Dyna, 03, 06-16 Touring, 06-15 CVO, 10-16 Trike, 06-17 Softail

Ready-to-install cylinder heads fully assembled with springs and valves for reliable performance and simplified installation. 🔧

• Optimized combustion chamber and valve sizes for improved low- and midrange response while supporting modestly larger stroker or big-bore builds up to 110".
• High-performance valve springs accept camshafts with up to 0.650" lift.
• Intake ports flow 264 CFM versus stock 182 CFM for better breathing at throttle openings.
• Will not work with S&S compression releases in a late-model Twin Cam that has Harley Davidson® ACR (Automatic Compression Release) already installed.
• Compatible with stock rocker boxes, exhaust, and intake manifolds; S&S® rocker boxes required if S&S compression releases are used.
• Not compatible with '14-'16 FLHTK/FLHTKL, FLHTCUTG Twin-Cooled motors, '17 touring models, or models with OEM compression releases.

Made in the USA. Ideal for touring bikes and heavier machines seeking stronger midrange power. 🇺🇸