S&S Cycle 3-9/16" Bore Cylinder & Piston Kit Wrinkle Black - Harley Sportster
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.
Elevate your Harley Sportster's performance with the S&S Cycle 3-9/16" Bore Cylinder and Piston Kit. This comprehensive kit provides matched cylinders and pistons, ready to form the core of a powerful engine upgrade. The wrinkle black finish adds a custom, aggressive look to your V-twin.
Why riders pick this
- Increases displacement for more power
- 3-9/16" bore cylinders with matched pistons
- Wrinkle black finish for a custom look
- High-quality S&S Cycle components
- Foundation for a high-performance engine build
Designed for Harley-Davidson Sportster models, this S&S Cycle cylinder and piston kit is a direct fit for riders seeking a significant increase in engine displacement and compression. The 3-9/16" bore cylinders, paired with matched pistons, lay the groundwork for a more powerful and responsive engine. Each component is crafted with S&S Cycle's renowned quality, ensuring durability and performance for miles to come.
Unleash Greater Engine Potential
- 3-9/16" bore diameter for increased engine displacement
- 4.650" cylinder length for precise fitment
- Wrinkle black finish for a rugged, custom aesthetic
- Includes matched pistons and cylinders for a complete assembly
- Designed to boost horsepower and torque output
Building a Performance Sportster
This cylinder and piston kit is a critical upgrade for any Sportster owner looking to push their bike's limits. While the kit includes both cylinders and pistons, professional honing of the cylinders is recommended to ensure optimal piston-to-wall clearance before final assembly. Pair this kit with an S&S cam, a high-flow air cleaner, and a precise dyno tune to fully realize the performance potential of your Sportster engine.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 910-0697
- Bore: 3-9/16"
- Cylinder Length: 4.650"
- Weight: 24 lb
- Category: Engine Components / Piston Sets - Powersports
Common questions
Will this kit fit my XR1200?
No, S&S Cycle has confirmed that these cylinders and pistons are not compatible with XR1200 models.
Does this kit include both cylinders and pistons?
Yes, this S&S Cycle kit includes both matched cylinders and pistons, providing a complete top-end foundation for your Sportster engine upgrade.
Do I need to hone the cylinders before installation?
Yes, the cylinders ship slightly undersized and unhoned. It is crucial to have them properly honed by a qualified machinist to match your pistons for optimal performance and longevity.
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 | T14-662689 |
| WEIGHT | 24.0 lb |
