S&S CYCLE SKU: T14-1020350

S&S Cycle 4.32-inch Big Bore Power Package - Harley Touring, Softail & Dyna

$10.838.000,00
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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 matched big-bore engine kit designed to transform a stock Harley engine. It combines 4.32-inch cylinders with a cam, cam plate, oil pump, and related internals for reliable high horsepower. This complete system eliminates the guesswork and extensive sourcing typically associated with engine upgrades.

Why riders pick this

  • Boost displacement with 4.32-inch big-bore cylinders
  • Optimized power delivery from a matched cam and cam plate
  • Reliable lubrication with an included OEM-spec oil pump
  • Complete cam chest components for a comprehensive upgrade
  • Engineered as a system for proven reliability and performance

When you're ready to uncork serious power from your Harley, the S&S Cycle Power Package delivers. This comprehensive kit provides all the core components needed for a significant engine upgrade, ensuring a cohesive system that works together for optimal performance and reliability. Riders looking for a straightforward path to increased displacement and power without piecing together individual parts will find this package invaluable.

Engineered for Performance and Reliability

  • Features 4.32-inch big-bore cylinders for increased displacement
  • Includes a matched high-performance cam and cam plate for optimized valve timing
  • OEM-spec oil pump included to maintain proper lubrication
  • Complete cam chest components ensure a seamless upgrade
  • Designed as a complete system for enhanced reliability and performance

Upgrade Your Ride with Confidence

Installing an S&S Cycle Power Package is a significant step towards building a truly high-performance V-twin. While it's an advanced modification, the bundled nature of this kit simplifies the process by providing matched components. Consult with a professional builder to ensure proper installation and a dyno tune to maximize your power gains and ensure optimal engine health.

Specifications

  • Brand: S&S Cycle
  • Manufacturer Part #: 310-1234D
  • 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 4.32-inch cylinders, pistons, a matched cam, cam plate, oil pump, gaskets, and all necessary components for installation into a compatible Harley engine.

Do I need a professional mechanic to install this kit?

Yes, this is an advanced engine modification. Professional installation by an experienced Harley mechanic or a reputable performance shop is strongly recommended to ensure proper assembly and tuning.

Will this Power Package fit my specific Harley-Davidson model?

S&S Cycle Power Packages are designed for specific Harley-Davidson platforms. Please use our Shop by Bike tool or consult S&S Cycle documentation to confirm exact year and engine size compatibility before ordering.

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
SKUT14-1020350
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