✓ 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: T14-1020391
S&S Cycle Power Packs High-Performance Piston Sets - Harley Touring, Softail, Dyna
$3,294.95
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 high-performance piston sets meticulously engineered to elevate your Harley-Davidson engine's displacement and horsepower. These sets offer a direct replacement for stock pistons in compatible Harley models, providing a straightforward path to significant power gains.
Why riders pick this
- Increases engine displacement and horsepower
- High-performance piston design
- Direct replacement for stock pistons
- S&S Cycle engineered for quality and power
When you're ready to uncork the true potential of your Harley-Davidson V-twin, S&S Cycle Power Packs deliver. These high-performance piston sets are designed to increase engine displacement, providing a substantial boost in horsepower and torque that you'll feel every time you twist the throttle.
Unlock More Horsepower
- Designed for increased engine displacement and power output
- High-performance piston design for demanding applications
- Backed by S&S Cycle's renowned engineering expertise
- Engineered for direct replacement installation in compatible models
Optimize Your Engine Build
Upgrading to S&S Cycle Power Packs is a crucial step in any performance build. While they offer a direct replacement fitment in many cases, it's vital to verify your specific model year and engine size with S&S Cycle fitment charts before ordering. To maximize the benefits of increased displacement, a professional dyno tune will be essential to optimize your air-fuel ratio and ensure peak performance and engine longevity.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1394A
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
Will installing these pistons require a fuel system re-tune?
Yes, anytime you increase engine displacement or significantly alter engine components, a new tune is required to optimize your air-fuel ratio and prevent detonation, ensuring your engine runs efficiently and powerfully.
What Harley-Davidson models do these Power Packs fit?
S&S Cycle Power Packs are engineered for multiple Harley engine families. Always check the detailed fitment guide on our website or use the Shop by Bike tool to confirm compatibility with your specific model and year.
Are these pistons a bolt-on upgrade?
These pistons are designed for direct replacement installation in compatible Harley models. However, proper installation may require professional engine work to ensure correct clearances and optimal performance.
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 | T14-1020391 |
| 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