✓ 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: T14-1020377
S&S Cycle High-Performance Piston Set - Harley-Davidson
$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.
S&S Cycle Power Packs are high-performance piston sets engineered specifically for Harley-Davidson engines, designed to increase displacement and ultimately, horsepower. These direct replacement pistons are built for long-term reliability, making them suitable for both demanding street use and performance applications.
Why riders pick this
- S&S Cycle engineering for trusted performance
- High-performance piston design for increased power
- Boosts engine displacement and horsepower
- Designed for long-term reliability
- Ideal for street and performance applications
- Direct replacement for compatible Harley engines
When upgrading your Harley's engine, the pistons are a critical component for realizing significant power gains. S&S Cycle's high-performance piston sets are meticulously designed to handle the increased demands of higher displacement and more aggressive engine builds. With S&S engineering behind them, you can trust these pistons to provide consistent performance and durability, whether you're cruising or pushing the limits on the dyno.
Engineered for Power and Durability
- S&S Cycle engineering ensures precise fit and function
- High-performance piston design optimized for increased displacement
- Constructed for exceptional strength and long-term reliability
- Designed to withstand the rigors of performance V-twin engines
- Compatible with various Harley-Davidson engine platforms
Foundation for a Big Power Build
These S&S Cycle pistons are the core of any serious engine upgrade, offering the capability to increase your Harley's displacement and horsepower. They are an essential component when aiming for a high-output engine, providing the robust foundation needed to support other performance modifications like stroker kits and aggressive camshafts. Always ensure proper machining and professional installation for optimal results.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1402A
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
Will these pistons increase my engine displacement?
Yes, S&S Cycle Power Packs (piston sets) are designed to raise engine displacement and peak horsepower when matched with compatible cylinders and stroker kits.
Are these pistons a direct bolt-in replacement?
Power Pack piston sets typically require engine disassembly, cylinder work, and proper machine shop installation. This is not a simple bolt-in item, and professional installation is recommended.
Do I need to tune my bike after installing these pistons?
Yes, after piston installation and any related engine work, engine remapping or carburetor jetting is typically required to optimize fuel delivery and ignition timing for the new displacement and performance characteristics.
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 | T14-1020377 |
| 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