S&S Cycle Power Package Big Bore Cylinder Kit - Harley Touring, Softail & Dyna

The S&S Cycle Power Package is a comprehensive big-bore engine assembly designed to uncork serious horsepower and torque from your Harley-Davidson. This kit combines 4.32-inch cylinders with a perfectly matched cam, cam plate, oil pump, and all necessary supporting components.

Why riders pick this

• Complete big-bore engine assembly
• 4.32-inch cylinders for increased displacement
• Matched cam, cam plate, and oil pump for synergy
• Delivers reliable high-horsepower output
• Includes all necessary cam chest components

When you're chasing reliable high-horsepower, a well-engineered big-bore kit is the foundation. The S&S Cycle Power Package takes the guesswork out of building a high-performance V-twin by bundling critical components that are designed to work together seamlessly. This isn't just a set of cylinders; it's a complete cam chest assembly with everything you need to transform your Harley's power delivery.

Unleash Serious Power

• Large 4.32-inch big-bore cylinders increase displacement
• Matched cam and cam plate for optimized valve timing
• Integrated oil pump ensures consistent lubrication under load
• Complete cam chest assembly for a simplified upgrade

Engineered for Performance

This Power Package is built for the rider who demands more from their Harley. Whether you're upgrading an Electra Glide, Softail Heritage Classic, or other compatible Harley-Davidson, this kit provides a robust foundation for significant performance gains. Professional installation and a dyno tune are recommended to get the most out of this powerful upgrade.

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1103D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Common questions