✓ VERIFIED
Aug 28, 2023
Everything you expect from S&S
Have installed this kit on multiple bikes. S&S knows what they’re doing.
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S&S CYCLE
SKU: T14-1020372
S&S Cycle 4.32-inch Big Bore Power Pack - Harley Touring & Softail
$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.
S&S Cycle Power Packs are comprehensive big-bore engine kits meticulously engineered to deliver substantial horsepower gains without the guesswork. Each kit pairs 4.32-inch cylinders with matched pistons, a performance cam, upgraded cam plate, oil pump, and all necessary hardware for a complete, bolt-together top-end transformation on your Harley.
Why riders pick this
- 4.32-inch big-bore cylinders for maximum displacement
- Matched piston and ring set for optimal performance
- Includes cam, cam plate, and oil pump as a system
- Complete bolt-together kit with all hardware
- Engineered for significant horsepower gains
- Designed for Harley Touring, Softail, and Dyna models
When stock just isn't enough, the S&S Cycle Power Pack provides a proven path to serious power. This kit is more than just big-bore cylinders; it's a fully engineered system where every component works in harmony to produce reliable, high-output performance. From the precisely matched pistons to the integrated cam and oiling system, S&S takes the complexity out of a major engine upgrade, allowing you to build a V-twin that truly hauls.
Integrated Performance Components
- 4.32-inch big-bore cylinders for increased displacement
- Matched piston and ring set optimized for performance and durability
- Includes a high-performance cam, cam plate, and oil pump
- Complete with all gaskets and hardware for a bolt-together installation
- Designed for reliable high-performance output on the street or strip
Transform Your Harley's Powerplant
The S&S Cycle Power Pack is an ideal solution for riders looking to significantly boost their engine's output and responsiveness. By providing a complete, pre-engineered system, it minimizes the need for extensive custom work and ensures compatibility between critical engine components. This kit is the foundation for a V-twin that pulls harder through every gear, making your Harley a true performance machine.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1229D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
What exactly is included in the S&S Cycle Power Pack?
The Power Pack comes complete with big-bore cylinders, matched pistons and rings, a performance cam, cam plate, oil pump, and all necessary gaskets and hardware for installation.
Do I need an ECU tune or fuel management system after installing this kit?
Yes, a fuel management system or ECU tune is typically required to optimize the air/fuel mixture and ignition timing, ensuring peak performance and engine longevity with this significant upgrade.
Will this Power Pack fit my specific Harley model and year?
S&S Power Packs are tuned to specific engine platforms. We recommend verifying engine displacement and year compatibility using our Shop by Bike tool or by contacting S&S Cycle directly 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.
| BRAND | S&S Cycle |
| TYPE | Piston Sets - Powersports |
| SKU | T14-1020372 |
| WEIGHT | 44.19 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
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✓ 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!
✓ VERIFIED
Mar 8, 2020
5 Stars
✓ VERIFIED
Jun 6, 2021
I didn't get it yet,can't wait too get it in my bike, than ill leave a review