✓ VERIFIED
Sep 26, 2019
Really nice kit great directions for install and ring gap. Follow the directions and you can't go wrong..
Image coming soon
S&S CYCLE
SKU: T14-871884
S&S Cycle Highlighted Fin Cylinder & Piston Kit - Harley Milwaukee-Eight
$1,849.95
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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.
Unleash more power from your Harley Milwaukee-Eight engine with the S&S Cycle cylinder and piston kit. This complete assembly is designed to deliver increased displacement and power over your stock internals. It features a distinctive highlighted fin design, enhancing both aesthetics and cooling performance.
Why riders pick this
- Highlighted fin design for superior cooling
- Complete cylinder and piston assembly
- Direct bolt-on fit for Milwaukee-Eight engines
- Increases displacement over stock M8
- Enhances engine aesthetics and performance
The S&S Cycle cylinder and piston kit is a comprehensive upgrade for Harley Milwaukee-Eight (M8) engines, engineered to boost displacement and overall power output. This kit provides a complete bolt-on solution, allowing for a straightforward installation directly into your M8 model. The cylinders feature a unique highlighted fin design, which not only adds a custom touch to your engine's appearance but also contributes to improved cooling efficiency, helping your engine perform better under demanding conditions.
Enhanced Performance and Cooling
- Highlighted fin design for improved engine cooling
- Complete cylinder and piston assembly for easy installation
- Direct bolt-on fitment for Milwaukee-Eight (M8) engines
- Delivers increased displacement compared to stock M8 cylinders
- Engineered for reliable, high-performance operation
A Direct Path to M8 Power
This S&S Cycle kit offers a direct and effective way to upgrade your Milwaukee-Eight engine. By providing a complete cylinder and piston assembly, it simplifies the process of increasing your V-twin's displacement and power. The attention to detail, including the highlighted fin design, ensures that this upgrade not only performs exceptionally but also looks the part on your Harley. It's an ideal choice for riders looking to maximize their M8's potential with a high-quality, bolt-on solution.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 910-1008A
- Category: Engine Components / Piston Sets - Powersports
- Weight: 30 lb
Common questions
Will this kit increase my horsepower?
Yes, the increased displacement achieved with this S&S Cycle kit, stemming from its larger bore and stroke capabilities, is designed to produce measurable power gains over stock M8 cylinders.
Is this a complete kit, or do I need additional parts?
This is a complete cylinder and piston assembly. You may need to verify your specific M8 model year for any additional gaskets or seals that might be recommended for a complete installation.
Do I need to tune my bike after installing this kit?
A professional fuel and ignition tune is strongly recommended after installing this S&S Cycle kit to optimize performance, ensure proper air-fuel ratios, and maximize reliability for your Milwaukee-Eight engine.
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 | T14-871884 |
| WEIGHT | 30.0 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.88
8 RATINGS
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✓ VERIFIED
Apr 26, 2022
Excellent service and pricing im very satisfied
✓ VERIFIED
Sep 26, 2019
Better than OEM.. can't go wrong.
✓ VERIFIED
Mar 30, 2026
Very happy with this kit
Simple, easy kit.
✓ VERIFIED
Mar 29, 2026
SMS makes great aftermarket upgrades
✓ VERIFIED
Oct 24, 2025
👍👍 For fast delivery
Parts came just like as expected. They look great! Can't wait to install these bad boys along with a few other parts.