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

S&S Cycle Power Pack is a complete big-bore engine transformation kit combining 4.32" cylinders with matched cam, cam plate, oil pump, and supporting components for reliable high-horsepower builds. Engineered to deliver serious power gains without the cost of sourcing parts individually.

Features

• 4.32" big-bore cylinders
• Matched performance cam and cam plate
• Complete cam chest components
• Oil pump included
• Designed for reliability at high output

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1236D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Frequently Asked Questions

What's included in the S&S Power Pack?

4.32" cylinders, matched cam, cam plate, oil pump, and all cam chest components needed for a complete build.

Is this a bolt-on kit or does it require engine teardown?

This is a full engine overhaul kit. Professional machine work and installation by an experienced builder is required.

What kind of horsepower gains should I expect?

Power gains depend on your starting displacement and tuning. Contact S&S or your builder for specific numbers on your engine configuration.

Do I need to retune my ECM after installation?

Yes — a fuel tune via a tuner or ECM flash is required to optimize performance with the new displacement and cam.