✓ 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: T14-1020357
S&S Cycle 4.32-inch Big Bore Power Package - 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 big-bore engine kit designed to deliver reliable high horsepower gains. It combines 4.32-inch cylinders with a matched cam, cam plate, oil pump, and supporting components. This all-in-one solution is perfect for riders looking to upgrade engine performance without the complexity of sourcing individual parts.
Why riders pick this
- Increase displacement with 4.32-inch big-bore cylinders
- Experience optimized power with matched cam and cam plate
- Ensure engine health with integrated oil pump and cam chest
- Simplify upgrades with a complete, all-in-one kit
- Achieve reliable high horsepower gains
When you're chasing serious power from your Harley-Davidson, the S&S Cycle Power Package provides a robust foundation. This comprehensive kit ensures that all critical engine components are perfectly matched, leading to a cohesive and reliable performance upgrade. Riders seeking a significant boost in displacement and horsepower will appreciate the integrated design and engineering behind this package.
Integrated Design for Peak Performance
- Features 4.32-inch big-bore cylinders for a substantial increase in engine displacement
- Includes a matched high-performance cam and cam plate for optimized power delivery
- Integrated oil pump and cam chest components ensure a complete system upgrade
- Complete kit reduces the need for sourcing multiple parts individually
- Designed to deliver reliable high horsepower gains for your V-twin
The Path to More Power
Upgrading to an S&S Cycle Power Package is a major step in transforming your Harley's engine. While the kit provides everything needed for the core engine components, proper installation and a custom dyno tune are essential to maximize performance and ensure long-term reliability. We recommend having this kit installed by a qualified Harley-Davidson performance shop.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1109D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
What engine platform does this Power Package fit?
S&S makes Power Packages for multiple Harley platforms. Please use our Shop by Bike tool or consult S&S documentation to confirm the specific year and engine (Evolution, Twin Cam, Milwaukee-Eight) before purchase.
What's included in the S&S Cycle Power Package kit?
The kit includes cylinders, pistons, a matched cam, cam plate, oil pump, and necessary gaskets and hardware for a complete engine upgrade.
Will I need a dyno tune after installing this kit?
Yes, installing a Power Package fundamentally changes your engine's characteristics. A professional dyno tune is absolutely necessary to optimize fuel delivery and ignition timing for the new components.
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 | T14-1020357 |
| 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