✓ VERIFIED
Aug 28, 2023
Everything you expect from S&S
Have installed this kit on multiple bikes. S&S knows what they’re doing.
S&S CYCLE
SKU: T14-852119
S&S Cycle 4.32" Big Bore Power Pack Kit - 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 bolt-on big-bore engine kits designed to uncork serious horsepower. They combine 4.32-inch cylinders with matched high-performance cams, cam plates, and upgraded oil pumps.
Why riders pick this
- Bolt-on big-bore engine kit for significant power gains
- Features 4.32-inch big-bore cylinders
- Includes matched high-performance cam and cam plate
- Integrated oil pump upgrade for better lubrication
- Complete cam chest package for a comprehensive upgrade
- Designed for reliable performance on Harley-Davidson engines
These S&S Cycle Power Packs are engineered to deliver substantial horsepower gains for Harley-Davidson engines without requiring a full engine rebuild. This kit provides a complete cam chest package, making it an ideal choice for riders seeking reliable performance on a realistic budget. It's a proven way to get more out of your V-twin.
Integrated Performance Components
- Includes 4.32-inch big-bore cylinders for increased displacement
- Features a matched high-performance cam specifically chosen for the kit
- Comes with a high-strength cam plate for improved valvetrain stability
- Integrates an upgraded oil pump for enhanced lubrication and cooling
- Provides a complete cam chest package for a cohesive upgrade
Bolt-On Power for Your V-Twin
The S&S Cycle Power Pack is designed for straightforward, bolt-on installation, making it accessible for capable home mechanics or a quick upgrade at your trusted shop. While it offers significant performance gains, remember that proper tuning is essential to maximize the benefits and ensure optimal engine health after installation.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1056C
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
What horsepower gain should I expect with this Power Pack?
Horsepower gains depend on your engine's starting displacement, model year, and final tune. S&S Cycle provides dyno results by engine family; we recommend checking their website or contacting them for specific figures for your model.
Do I need to retune my fuel injection after installing this Power Pack?
Yes, a Power Pack significantly changes air and fuel flow characteristics. Fuel mapping adjustments and a dyno tune are required for optimal performance, drivability, and engine longevity.
Is this Power Pack a direct bolt-on kit?
Yes, this S&S Cycle Power Pack is designed for bolt-on installation. However, we always recommend verifying specific model year and engine family compatibility using our Shop by Bike tool 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 | T14-852119 |
| 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
