S&S Cycle Power Packs — Harley-Davidson Electra Glide, Softail Heritage Classic, Electra Glide Classic (1955-2026)

S&S Cycle Power Package is a complete big-bore engine kit combining 4.32-inch cylinders with matched cam, cam plate, oil pump, and support components to deliver reliable high horsepower gains. Designed as an all-in-one solution for riders looking to upgrade engine performance without sourcing individual parts.

Features

• 4.32-inch big-bore cylinders
• Matched high-performance cam and cam plate
• Integrated oil pump and cam chest components
• Complete kit reduces sourcing multiple parts

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1109D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Fitment

Fits Harley-Davidson models. Confirm your specific engine platform and year with S&S documentation before ordering.

Frequently Asked Questions

What engine platform does this Power Package fit?

S&S makes Power Packages for multiple Harley platforms. Verify the specific year and engine (Evolution, Twin Cam, Milwaukee-Eight) with S&S or your shop before purchase.

What's included in the kit?

Cylinders, pistons, cam, cam plate, oil pump, and necessary cam chest components. Check the detailed kit contents on S&S Cycle's site to confirm all parts for your build.

Do I need to source any additional parts?

Kit includes core cam chest components, but gaskets, fasteners, and other engine internals may require separate sourcing depending on your machine and build scope.

Is professional installation required?

Engine assembly requires machine shop or qualified mechanic expertise. This is not a bolt-on upgrade — expect shop labor for proper installation and tune.