S&S Cycle Power Pack 4.32" Big-Bore Cylinders - Harley V-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.
S&S Cycle Power Packs combine 4.32-inch big-bore cylinders with matched cams, cam plates, an oil pump, and all related internals. This comprehensive kit is designed to deliver high-output horsepower without the piecemeal cost and complexity of sourcing parts separately.
Why riders pick this
- 4.32-inch big-bore cylinders
- Matched cam and cam plate
- High-capacity oil pump and gasket set
- Complete cam chest hardware
- Purpose-built for high-output engines
These Power Packs are purpose-built kits for Harley-Davidson engines, offering a single solution for riders looking to add significant displacement and performance. Every component within the kit is engineered by S&S for optimal compatibility and maximum power delivery, ensuring a reliable and potent engine build. It's the ideal choice for those who demand a complete, high-quality solution for their V-twin performance upgrade.
Integrated Performance Components
- 4.32-inch big-bore cylinders for increased engine volume
- Matched performance cam and cam plate for optimized valve timing
- Includes a high-capacity oil pump and gasket set
- Complete cam chest hardware for a thorough upgrade
- Engineered for high-output horsepower gains
Serious Horsepower for Your Harley
The S&S Cycle Power Pack is a robust foundation for a high-performance Harley engine. While it provides all the critical components for a major power increase, professional installation and a custom dyno tune are crucial for maximizing performance and ensuring the longevity of your engine. This kit is perfect for riders pushing their Touring, Softail, or Dyna platforms to the next level, offering a streamlined path to serious horsepower.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1232D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
What components are included in this S&S Power Pack?
This Power Pack includes big-bore cylinders, pistons, a performance cam, cam plate, oil pump, gaskets, and all necessary cam chest hardware for a complete engine build.
Will I need to machine my cases for these cylinders?
Most big-bore kits for Harley-Davidson engines require some case work for proper fitment. We highly recommend consulting S&S Cycle's technical specifications or a reputable Harley machine shop for requirements specific to your engine platform.
Will this Power Pack fit my specific year and model of Harley?
S&S Cycle offers various Power Packs for different Harley-Davidson engine platforms and years. Please use our 'Shop by Bike' tool or consult with a V-twin performance specialist to confirm exact compatibility for your specific motorcycle before ordering.
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 | Piston Sets - Powersports |
| SKU | T14-1020335 |
| WEIGHT | 44.19 lb |