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

S&S Cycle Power Package combines big-bore cylinders (4.32"), high-flow cam, cam plate, oil pump, and matched internals to add reliable horsepower without a full engine rebuild. Ready-to-bolt kit for Harley riders seeking performance and value in one purchase.

Features

• 4.32" big-bore cylinders
• Matched high-performance cam
• Integrated cam plate and oil pump
• Complete cam chest package

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1059D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Fitment

Fits Harley-Davidson models. Confirm your specific year and engine size with S&S Cycle before ordering to ensure compatibility.

Frequently Asked Questions

What's included in the Power Package?

Cylinders, pistons, high-performance cam, cam plate, oil pump, and all gaskets and hardware needed for installation.

Will this work on my specific Harley model?

S&S Power Packages are engineered for different engine platforms. Verify your engine type and year with the manufacturer to confirm fitment.

Do I need to remove my entire engine to install this?

Yes — this is a top-end and internal upgrade requiring engine removal and partial disassembly. Professional installation is strongly recommended.

What kind of horsepower increase should I expect?

Output depends on your starting engine, fuel tuning, and other modifications. S&S provides dyno estimates for specific engine combinations.