S&S Cycle Super Stock Cylinder Heads - Harley Dyna & Softail
About S&S Cycle
S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.
Unleash the full potential of your S&S T-Series T2 long block engine with S&S Cycle Super Stock Cylinder Heads. These high-performance heads are engineered to maximize airflow and power output, transforming your ride's performance. Featuring S&S ported passages, they are a direct upgrade for serious V-twin builders.
Why riders pick this
- Designed for S&S T-Series T2 long block engines
- S&S ported passages maximize airflow and power
- Optimized intake and exhaust valve sizing
- Durable black wrinkle coat finish
- Compatible with stock-dimension manifolds
When you're building a serious V-twin, factory heads just won't cut it. S&S Cycle Super Stock Cylinder Heads are purpose-built for S&S T-Series T2 long block engines, delivering the airflow needed for big power. With optimized valve sizing and expertly ported passages, these heads ensure your engine breathes freely and performs at its peak. They're an essential component for any high-performance Dyna or Softail build.
Engineered for Maximum Airflow
- Optimized intake and exhaust valve sizing for superior flow
- S&S ported cylinder passages to maximize power output
- Durable black wrinkle coat finish matches performance aesthetic
- Stock-dimension manifold mounting surface for compatibility
Build for Performance
These S&S Super Stock heads are designed for builders running S&S T-Series T2 long block engines or 2007-2016 big twins equipped with an S&S 4-1/4" bore Hot Set Up Kit. They are not for stock Harley blocks, but for those pushing the limits of their V-twin. Pair them with a compatible S&S cam and exhaust for a complete performance package.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 900-0349
- Intake Valve: 2.000 in
- Exhaust Valve: 1.605 in
- Finish: Black wrinkle coat
- Weight: 1 lb
- Category: Engine Components / Heads
Common questions
Will these S&S cylinder heads fit my stock Harley engine?
No, these cylinder heads are specifically designed for S&S T-Series T2 long block engines and are not compatible with stock Harley blocks. They also fit 2007-2016 big twins with an S&S 4-1/4" bore Hot Set Up Kit.
Do these heads require a special intake manifold?
No, these S&S Cycle cylinder heads feature a stock-dimension manifold mounting surface, allowing you to use a compatible manifold designed for stock specifications.
What kind of performance improvement can I expect?
These heads are engineered with optimized porting and valve sizing to maximize airflow, contributing to significant power output increases when paired with a compatible S&S engine build and supporting modifications.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | S&S Cycle |
| TYPE | Heads |
| SKU | T14-664039 |
| WEIGHT | 1.0 lb |
