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 engine building kit combining big-bore 4.32" cylinders with matched cam, cam plate, oil pump, and internals for high-performance Harley builds. Designed to deliver reliable horsepower gains without nickel-and-diming builders on separate component purchases.

Features

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

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 310-1238D
• Category: Engine Components / Piston Sets - Powersports
• Weight: 44.19 lb

Fitment

Fits Harley-Davidson models. Verify engine displacement and year compatibility with S&S Cycle or your builder before ordering.

Frequently Asked Questions

What engine displacement does this fit?

S&S offers Power Packages for multiple Harley engines. Confirm your engine year and size matches part number 310-1238D before purchase.

Do I need additional machine work or does this bolt on?

This is a performance engine kit requiring professional assembly and tuning. This is not a bolt-on part — engine building expertise is essential.

What's included in the kit?

Cylinders, pistons, matched cam, cam plate, oil pump, and associated cam chest components. Check the detailed parts list for your specific model.

Will this require engine removal?

Yes — building a high-performance engine with this kit requires complete engine removal and professional machine shop work.