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

S&S Cycle Power Packs combine big-bore cylinders up to 4.32 inches with matched pistons, cam, cam plate, and oil pump to deliver high-performance horsepower gains on Harley-Davidson engines. A complete bolt-on upgrade kit designed for reliable power without requiring internal engine modifications.

Features

• 4.32-inch big-bore cylinders
• Matched piston and cam package
• Includes cam plate and oil pump
• Complete power package in one kit

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1050D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Fitment

Fits Harley-Davidson models. Verify your specific engine size and year compatibility before ordering.

Frequently Asked Questions

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

Cylinders, pistons, cam, cam plate, oil pump, and all necessary components for a complete cam chest upgrade.

Do I need to pull my engine for installation?

Yes — this is a major engine overhaul requiring complete cam chest disassembly. Professional installation is strongly recommended.

Will this work with my stock Harley?

Power Packs are designed for Harley engines, but specific fitment depends on displacement and year. Verify your bike's engine code with S&S before purchase.

How much horsepower gain should I expect?

Power gains vary by engine size and fuel system. S&S publishes dyno results for each kit — check their website for your specific package.