S&S CYCLE - 106-3227 - Cylinder Heads - 79 cc - Super Stock - Twin Cam
Whether restoring a machine to factory spec or building something better, the S&S CYCLE 106-3227 gives you a cylinder head kit that meets the demands of serious street use. Heads are fully assembled with springs and valves. Designed for stock 88” to 103” engines or slightly modified engines up to 110”, giving you a level of quality that holds up across the full service life of the component. Moderately sized 1.940” intake and 1.575” exhaust valves maintain port velocity in smaller displacement engines for good low and midrange response. S&S® High performance valve springs allow the installation of camshafts with up to .650” lift. Combustion chamber provides a significantly higher than stock, but still manageable compression ratio. The 106-3227 is the kind of component that earns its place in any build or repair by doing exactly what it is supposed to, every time. Sold as a pair.
Features
- Heads are fully assembled with springs and valves
- Designed for stock 88” to 103” engines or slightly modified engines up to 110”
- Moderately sized 1.940” intake and 1.575” exhaust valves maintain port velocity in smaller displacement engines for good low and midrange response
- S&S® High performance valve springs allow the installation of camshafts with up to .650” lift
- Combustion chamber provides a significantly higher than stock, but still manageable compression ratio
- Heads can be decked up to .060” to increase compression, but will require piston valve pockets to be re-machined
- Compatible with stock rocker boxes, exhaust, and intake manifolds
- Machined for S&S® electric or manual compression releases
- Made in the USA
- Should not be used with any piston having a pop up dome.
- Not compatible with '14-'16 FLHTK/FLHTKL, FLHTCUTG Twin-Cooled motors or '17 touring models.
- Must use the included S&S valve cover gasket kit with stock rocker covers.
- Must use S&S rocker boxes if S&S compression releases are used.
Specs
- Material: Aluminum
- Displacement: 79 cc
- Color/Finish: Powder-Coated
- Color/Finish: Silver
- Units: Pair
- Model: Super Stock
- Product Name: Cylinder Head Kit
- Riding Style: Street
Frequently Asked Questions - S&S CYCLE - 106-3227 - Cylinder Heads - 79 cc - Super Stock - Twin Cam
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
