S&S Cycle Finned Cylinder & Piston Kit - Harley Milwaukee-Eight
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.
Transform your Harley-Davidson Milwaukee-Eight engine with the S&S Cycle Finned Cylinder and Piston Kit, engineered for superior cooling and increased power. This complete assembly delivers enhanced displacement and compression, resulting in more horsepower and torque for your M8-powered Harley. It's a premium upgrade for riders seeking significant performance gains.
Why riders pick this
- Improved cooling with finned cylinder design
- Complete piston and cylinder assembly
- Increases horsepower and torque for M8
- S&S Cycle quality and engineering
- Direct fit for Milwaukee-Eight engines
This S&S Cycle cylinder and piston kit features an advanced finned cylinder design, specifically engineered for optimal heat dissipation. This means your Milwaukee-Eight engine runs cooler, especially under demanding conditions, leading to more consistent power delivery and extended component life. The complete piston and cylinder assembly is manufactured with S&S Cycle's high standards of engineering and quality control, ensuring a direct fit and reliable performance gains for your M8 engine platform.
Cooler Operation, More Power
- Finned cylinder design for improved heat dissipation
- Complete piston and cylinder assembly
- Increases displacement and compression ratio
- S&S Cycle engineering and quality control
- Direct fit for the Milwaukee-Eight engine platform
The Foundation for a High-Performance M8
Installing the S&S Cycle Finned Cylinder and Piston Kit is a fundamental step in building a high-performance Milwaukee-Eight. The increased displacement and compression, combined with the benefits of enhanced cooling, lay the groundwork for a truly powerful V-twin. For best results, professional installation is highly recommended, followed by a custom dyno tune to optimize your engine's fuel delivery and ignition timing, unlocking its full potential.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 910-0909A
- Category: Engine Components / Piston Sets - Powersports
- Weight: 30 lb
Common questions
What engines does this kit fit?
This S&S Cycle kit is designed exclusively for Harley-Davidson Milwaukee-Eight (M8) engines. It is not compatible with Twin Cam, Evolution, or other Harley engine platforms.
Does this require professional installation?
Yes, installation of a cylinder and piston kit requires significant engine disassembly, precise torque specifications, and accurate piston ring gapping. We strongly recommend having a qualified V-twin shop perform the work.
Will this kit increase horsepower?
Yes, the increased displacement and compression ratio designed into this S&S Cycle kit will raise your Milwaukee-Eight's horsepower and torque output. A proper dyno tune will maximize these gains.
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 | T14-871887 |
| WEIGHT | 30.0 lb |
