✓ 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: T14-1020373
S&S Cycle 4.32-inch Big Bore Power Package - Harley Touring & Softail
$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 Package combines 4.32-inch big bore cylinders with a matched cam, cam plate, oil pump, and supporting internals to deliver high-output horsepower. This complete bolt-together kit transforms stock Harley engines without requiring extensive machine work or exotic tuning, making big power accessible.
Why riders pick this
- 4.32-inch big bore cylinders for increased displacement
- Includes matched high-performance cam and cam plate
- Complete oil pump and support hardware included
- Engineered as a unified system for reliability
- Delivers high-output horsepower gains
- Bolt-together kit, minimizing machine work
For riders seeking a significant boost in performance, the S&S Cycle Power Package offers a comprehensive solution. This kit is designed as a unified system, ensuring that all components work together seamlessly to maximize power and reliability. The larger displacement from the big bore cylinders, combined with optimized cam timing and improved oiling, creates a V-twin engine that pulls harder and responds quicker across the entire RPM range.
Engineered for Maximum Output
- 4.32-inch big bore cylinders for a substantial displacement increase
- Matched high-performance cam and cam plate for optimal valve timing and durability
- Complete oil pump and support hardware included for enhanced lubrication
- Engineered as a unified system for proven reliability and performance gains
- Designed to deliver high-output horsepower without extensive modifications
Simplified Performance Upgrade
This Power Package simplifies the process of achieving substantial performance gains. By providing all critical components in one kit, S&S Cycle ensures compatibility and takes the guesswork out of upgrading your Harley's engine. It's an excellent choice for riders who want to experience a dramatic increase in power and torque with a well-engineered, bolt-together solution.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1230D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
What engine platforms does this S&S Cycle Power Package fit?
S&S Cycle Power Packages are offered for multiple Harley platforms. We recommend confirming your year and engine type (Twin Cam, Milwaukee-Eight, etc.) using our Shop by Bike tool or by contacting S&S Cycle directly before purchase.
Do I need a tuner or ECU reflash with this kit?
Yes, a fuel management system or ECU tune is typically required to optimize the air/fuel mixture and ignition timing after installing this Power Package, ensuring optimal performance and engine safety.
Does this kit require any machine work for installation?
This Power Package is designed as a bolt-together kit, aiming to minimize the need for extensive machine work. However, always consult a qualified mechanic for proper installation.
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 | T14-1020373 |
| 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