S&S CYCLE SKU: T14-1020339

S&S Cycle Power Package Big-Bore Cylinder Kit - Harley Touring, Softail & Dyna

$3,294.95
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About S&S Cycle

S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.

The S&S Cycle Power Package is a complete engine transformation kit, meticulously designed to unlock high-performance horsepower from your Harley-Davidson engine. It combines big-bore cylinders with a matched performance cam, cam plate, and a high-volume oil pump, alongside all supporting components. This integrated system ensures enhanced power delivery while maintaining the crucial reliability that riders demand.

Why riders pick this

  • Complete engine transformation kit
  • Big-bore cylinders for increased power
  • Matched performance cam and cam plate
  • Includes high-volume oil pump
  • All major cam chest components included
  • Engineered for high-performance reliability

When you're ready to push the limits of your Harley's engine, the S&S Cycle Power Package provides a robust foundation. This comprehensive kit addresses both the top end and the cam chest, delivering a significant increase in displacement and optimized valve timing. The result is a V-twin that pulls harder, revs quicker, and delivers a more thrilling riding experience, whether you're on the street or the strip.

Integrated Performance for Your V-Twin

  • Big-bore cylinders for increased displacement and power
  • Matched performance cam and cam plate for optimized valve train
  • High-volume oil pump for improved lubrication
  • Complete cam chest components for a comprehensive upgrade
  • Designed for high-performance reliability

A Complete Engine Transformation

The S&S Cycle Power Package is engineered for a straightforward installation, bringing together critical engine components into one cohesive kit. While it provides the major cam chest and top-end parts, you may need additional gaskets, fasteners, or intake/exhaust components depending on the specific requirements of your build. Always verify fitment for your specific model year and engine type to ensure compatibility and maximum performance.

Specifications

  • Brand: S&S Cycle
  • Manufacturer Part #: 310-1231D
  • Category: Engine Components / Piston Sets - Powersports
  • Weight: 44.19 lb

Common questions

What's included in the S&S Cycle Power Package?

The Power Package includes big-bore cylinders, a matched cam, cam plate, oil pump, and all essential cam chest components needed for a comprehensive engine upgrade.

Do I need other parts to complete my engine rebuild with this kit?

The Power Package provides the major cam chest and top-end components. Depending on your specific build, you may need additional gaskets, fasteners, or intake/exhaust components.

Is this a bolt-on kit for my Harley-Davidson?

This Power Package is designed as a bolt-on solution for compatible Harley-Davidson engines. Always confirm your specific model year and engine type with our Shop by Bike tool for proper fitment.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDS&S Cycle
TYPEPiston Sets - Powersports
SKUT14-1020339
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