S&S Cycle 557C Chain Drive Camshaft Kit - Harley Dyna & Big Twin
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 more power from your Harley-Davidson Dyna or 2007-later Big Twin engine with the S&S Cycle 557C Chain Drive Camshaft Kit. Engineered for improved breathing and performance, this camshaft kit is a direct-fit replacement designed to work seamlessly with your stock ignition and fuel systems.
Why riders pick this
- Enhanced 557C cam profile for increased valve lift
- Chain drive design for reliable operation
- Direct-fit replacement for stock camshafts
- Works with factory ignition and fuel systems
- Designed for Dyna and 2007-later Big Twin platforms
The S&S Cycle 557C camshaft delivers an enhanced valve lift profile, making it an excellent choice for riders looking to uncork their V-twin. This chain drive design integrates smoothly into your existing setup, providing a noticeable boost in power delivery without requiring extensive modifications.
Optimized Performance Profile
- Enhanced 557C cam profile with increased valve lift
- Reliable chain drive design for consistent operation
- Direct-fit replacement for straightforward installation
- Compatible with stock ignition and fuel systems
Unlock Your Engine's Potential
Whether you're looking to gain an edge on the street or simply want a more responsive ride, the 557C cam kit is a solid foundation for performance. While it works with stock systems, a proper dyno tune can further optimize the air-fuel mixture and ignition timing, ensuring you get the most out of your new camshafts.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 330-0105
- Category: Engine Components / Camshafts
- Weight: 4.05 lb
Common questions
Will these camshafts fit my pre-2007 Big Twin engine?
This 557C cam kit is specifically designed for 2006 Dyna models and 2007-later Big Twin engines with chain drive camshaft systems. Please confirm your engine's year and cam drive type.
Do I need to retune my bike after installing these cams?
While the cams are designed to work with stock ignition and fuel systems, a custom dyno tune is highly recommended to fully optimize performance, fuel efficiency, and overall engine longevity with the increased valve lift.
Is this a complicated installation?
This S&S Cycle camshaft kit is a direct replacement for your factory camshafts. However, camshaft installation requires specialized tools and expertise, so professional installation is recommended.
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 | Camshafts |
| SKU | T14-663326 |
| WEIGHT | 4.05 lb |
