S&S CYCLE - 900-0251 - Cylinder Heads - 79 cc - Super Stock - Twin Cam
Whether restoring a machine to factory spec or building something better, the S&S CYCLE 900-0251 gives you a cylinder head kit that meets the demands of serious street use. Heads are fully assembled with springs and valves. Works great with 88” to 103” stock motors, but are ideal for larger stroker or big bore engines up to 110”, giving you a level of quality that holds up across the full service life of the component. Large 1.940” intake and 1.575” exhaust valve maintain port velocity for good low and midrange response, but supply enough air for stock and slightly larger engines to perform to their full potential. S&S® High performance valve springs allow the installation of camshafts with up to .650” lift (unless noted). Heads can be decked up to 0.060” to increase compression. The 900-0251 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
- Works great with 88” to 103” stock motors, but are ideal for larger stroker or big bore engines up to 110”
- Large 1.940” intake and 1.575” exhaust valve maintain port velocity for good low and midrange response, but supply enough air for stock and slightly larger engines to perform to their full potential
- S&S® High performance valve springs allow the installation of camshafts with up to .650” lift (unless noted)
- Heads can be decked up to 0.060” to increase compression
- Compatible with stock rocker boxes, exhaust, and intake manifolds (unless noted)
- Heads are machined for compression releases (sold separately)
- High port flow gives great performance now, and more later when additional upgrades are done
- Made in the USA
- If cams with higher TDC lifts are used or if heads are decked, piston valve pockets will require re-machining.
- Does not include rocker arm components, intake manifold or gaskets.
- Should not be used with any piston having a pop up dome.
- Must use S&S rocker boxes if S&S compression releases are used.
Specs
- Color/Finish: Powder-Coated
- Displacement: 79 cc
- Color/Finish: Wrinkle Black
- Material: Aluminum
- Riding Style: Street
- Model: Super Stock
- Product Name: Cylinder Head Kit
- Color/Finish: Black
- Units: Pair
Frequently Asked Questions - S&S CYCLE - 900-0251 - 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.
