S&S CYCLE SKU: T14-1020386

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

$3,294.95
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NOT SURE ABOUT FITMENT?

S&S Cycle Power Packs are forged piston sets engineered to increase displacement and horsepower in Harley-Davidson engines. Direct bolt-in replacement that delivers measurable power gains over stock pistons.

Features

  • Forged piston construction
  • Increased displacement vs. stock pistons
  • Direct bolt-in installation
  • S&S Cycle engineering

Specifications

  • Brand: S&S Cycle
  • Manufacturer Part #: 310-1396A
  • Category: Engine Components / Piston Sets - Powersports
  • Weight: 44.19 lb

Fitment

Fits Harley-Davidson engines. Consult S&S Cycle's fitment guide or contact V-Twin Bikers to confirm compatibility with your specific engine displacement and model year.

Frequently Asked Questions

Do I need new cylinders or can I use stock bores?

Power Packs are designed as a direct bolt-in upgrade for stock cylinder bores. Verify bore size matches your engine before ordering.

Will I need to tune my bike after installing these pistons?

Yes — a fuel and ignition tune is strongly recommended to optimize performance gains from the increased displacement.

What horsepower increase can I expect?

Gains depend on engine displacement, heads, cam, and tune. Contact S&S Cycle or your Harley tuner for estimates specific to your build.

Are these pistons street-legal?

Power Packs are engine components; legality depends on your state's emissions rules. Check local regulations before installation.

BRANDS&S Cycle
TYPEPiston Sets - Powersports
SKUT14-1020386
WEIGHT44.19 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
4 RATINGS
5★ 4
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Aug 28, 2023

Everything you expect from S&S

Have installed this kit on multiple bikes. S&S knows what they’re doing.

— BRETT M
✓ VERIFIED
Apr 13, 2022

100 kit is sick! 10/5/1 compression is perfect for the 585 cams. Not going to burn the tires unless you bounce it, but at 2.7 K it pulls like a freight train. Super fun! Thanks S&S!

— Anonymous
✓ VERIFIED
Mar 8, 2020

5 Stars

— Anonymous
✓ VERIFIED
Jun 6, 2021

I didn't get it yet,can't wait too get it in my bike, than ill leave a review

— Anonymous