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

S&S Cycle Power Package is a matched big-bore engine kit combining 4.32-inch cylinders with cam, cam plate, oil pump, and related internals for reliable high horsepower. Designed as a complete system to transform a stock Harley engine without requiring extensive sourcing or guesswork.

Features

• 4.32-inch big-bore cylinders
• Matched high-performance cam and cam plate
• OEM-spec oil pump included
• Complete cam chest components
• Engineered as a system for reliability

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1234D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Fitment

Fits Harley-Davidson models. Verify exact year and engine size compatibility with S&S Cycle before ordering, as this kit is designed for specific platforms.

Frequently Asked Questions

What's included in the Power Package?

Cylinders, pistons, cam, cam plate, oil pump, gaskets, and all matched components needed for installation into a compatible Harley engine.

Do I need a professional mechanic to install this?

This is an advanced engine modification. Factory installation or experienced machine work is strongly recommended.

Will this kit require engine remapping?

Yes. A fuel management system or ECU tune is necessary to optimize the larger displacement and cam timing.

What horsepower gains can I expect?

Power output depends on your base engine, tuning, and intake/exhaust setup. Contact S&S Cycle for estimates specific to your bike.