S&S CYCLE SKU: T14-1020394

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

$3,497.95
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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 Pack combines big-bore cylinders, a high-flow cam, and a complete cam chest package to deliver a substantial performance upgrade for your Harley-Davidson. This kit is engineered to add reliable horsepower without requiring a full engine rebuild, making it an efficient way to uncork your V-twin.

Why riders pick this

  • Big-bore cylinders increase displacement and power
  • High-flow cam delivers improved valve timing
  • Integrated cam plate and oil pump for reliability
  • Complete cam chest package for a comprehensive upgrade
  • Designed for reliable horsepower gains

When you're chasing more usable torque and horsepower from your Harley Touring, Softail, or Dyna, the S&S Cycle Power Pack is a proven solution. This comprehensive kit provides matched components designed to work in harmony, simplifying the upgrade process while delivering noticeable gains. It's built for riders who demand performance and value in one complete package.

Engineered for Performance and Durability

  • Includes big-bore cylinders for increased displacement
  • Features a high-performance cam matched to the cylinder volume
  • Comes with an integrated cam plate and oil pump for optimized oiling
  • Complete cam chest package ensures all critical components are upgraded together

Seamless Integration for Your V-Twin

This Power Pack is designed for a straightforward installation, allowing you to upgrade your engine with confidence. Riders seeking a significant boost in performance will find this kit to be a solid foundation, especially when paired with a performance exhaust and a proper dyno tune. Always confirm fitment for your specific Harley model and year to ensure optimal results.

Specifications

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

Common questions

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

The Power Pack typically includes big-bore cylinders, pistons, a high-performance cam, cam plate, oil pump, and all necessary gaskets and hardware for installation.

Will this Power Pack fit my specific Harley model?

S&S Power Packs are engineered for various Harley-Davidson engine platforms. Please use our Shop by Bike tool or consult S&S Cycle documentation to confirm compatibility with your exact year and engine size.

Do I need to tune my bike after installing this kit?

Yes, any significant engine modification like a big-bore and cam upgrade will require a proper dyno tune to optimize fuel delivery and ignition timing for peak performance and engine longevity.

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
SKUT14-1020394
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