S&S Cycle 590C Camshafts for 124cc+ Engines - Harley Touring, Softail & Dyna
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.
The S&S Cycle 590C camshaft is engineered to deliver peak horsepower in the upper RPM range for large-displacement Harley-Davidson engines. With big lift and aggressive timing, these cams allow 124cc and larger mills to rev hard and pull strong at high speeds. It's the ideal choice for riders pushing the limits of their performance V-twin.
Why riders pick this
- 590 cam profile for peak top-end horsepower
- Big valve lift for optimal high-RPM breathing
- Includes gaskets, bearings, and mounting hardware
- Designed for 124cc and larger Harley-Davidson engines
- Requires adjustable pushrods and heavy-duty valve springs
When you're chasing every last bit of power from your big-inch Harley-Davidson, the S&S Cycle 590C camshaft is built to deliver. This cam profile is specifically weighted for top-end horsepower, ensuring your engine breathes efficiently and pulls aggressively when you're really on the throttle. Designed for serious performance, it transforms your V-twin into a high-revving beast on the open road or the track.
Engineered for Maximum Top-End Power
- Features the aggressive 590 cam profile for high-RPM performance
- Designed with big valve lift to optimize breathing at high engine speeds
- Includes all necessary gaskets, bearings, and mounting hardware for installation
- Engineered for Harley-Davidson engines with 124cc displacement and larger
Optimizing Your Performance Build
To fully capitalize on the S&S Cycle 590C camshaft's potential, you'll need to pair it with adjustable pushrods and heavy-duty valve springs. This cam is designed for serious engine builders and performance enthusiasts looking to extract maximum power from their large-displacement V-twin. While it includes essential installation hardware, proper supporting modifications are key to unlocking its full capabilities and ensuring long-term reliability.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 330-0730
- Weight: 2.7 lb
- Category: Engine Components / Camshafts
Common questions
What size Harley-Davidson engine is this 590C cam designed for?
The S&S Cycle 590C camshaft is specifically engineered for Harley-Davidson engines with 124cc displacement and larger. Smaller engines will not fully benefit from its aggressive profile.
What other components do I need to install this 590C cam?
For proper installation and optimal performance, you will need adjustable pushrods and heavy-duty valve springs. The cam kit itself includes gaskets, bearings, and all mounting hardware.
Will this camshaft require a dyno tune after installation?
Yes, any performance camshaft upgrade, especially one as aggressive as the 590C, will require a professional dyno tune to optimize fuel delivery and ignition timing for your specific engine build.
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 | T14-663372 |
| WEIGHT | 2.7 lb |
