✓ 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: T14-1020382
S&S Cycle Power Pack 4.32-inch Big Bore Engine Kit - Harley-Davidson Touring, Softail, Dyna
$10.838.000,00
Free shipping on orders $99+ · Best value guarantee
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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 transform stock Harley-Davidson engines. These kits deliver larger displacement and matched high-performance internals, providing significant power gains without custom machine work.
Why riders pick this
- Bolt-on big bore engine kit for significant power gains
- 4.32-inch cylinders increase engine displacement
- Includes matched high-performance cam and cam plate
- Upgraded oil pump for superior lubrication
- Complete cam chest package for seamless integration
- Designed for reliable power and streetability
Unleash the full potential of your Harley-Davidson with an S&S Cycle Power Pack big bore engine kit. This complete package is engineered to deliver substantial horsepower gains and improved streetability by increasing your engine's displacement. It's a true bolt-on solution for riders seeking more power without extensive custom fabrication.
Complete Performance Upgrade
- 4.32-inch big bore cylinders for increased displacement
- Matched high-performance cam and cam plate for optimized timing
- Upgraded oil pump included for enhanced lubrication and reliability
- Complete cam chest package ensures all components work in harmony
- Designed for reliability and streetable power gains
Ready for the Road
The S&S Cycle Power Pack is more than just a piston set; it's a meticulously coordinated system. Each component, from the cylinders to the cam chest, is chosen to work together for reliable performance. This kit is ideal for riders who want a significant power boost that maintains the dependable character of their Harley. Always verify your engine family and year to confirm compatibility before installation.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1051D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
Do I need to have my engine machine work done, or is this bolt-on?
S&S Power Packs are designed as complete bolt-on kits. Most installations do not require extensive machine work if you're upgrading existing cylinders and heads.
Will I need a tuner after installing this kit?
Yes, installing a performance engine kit like this will require a proper dyno tune to optimize fuel delivery and ignition timing for the increased displacement and cam profile.
What Harley-Davidson models does this Power Pack fit?
This kit fits a range of Harley-Davidson models including Touring, Softail, and Dyna platforms. Always verify your specific engine family and year with S&S Cycle to ensure compatibility.
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 | T14-1020382 |
| 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