Everything you expect from S&S
Have installed this kit on multiple bikes. S&S knows what they’re doing.
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 for Harley-Davidson engines. These OEM-quality components deliver increased displacement and power gains when installed as part of a complete engine build or top-end refresh.
When you're chasing more cubes and more grunt from your V-twin, an S&S Cycle Power Pack Piston Set is where the build starts. These precision-engineered pistons are designed to integrate seamlessly into your Harley-Davidson engine, providing a solid foundation for significant performance upgrades. Whether you're refreshing an older motor or building a new beast, S&S delivers the reliability and power gains you expect from a premium engine component.
Upgrading your pistons is a critical step in any performance engine build. These S&S Power Packs provide the robust internals needed to handle higher compression and more aggressive cam profiles. Pair them with a performance cam and a proper dyno tune to unlock the full potential of your Harley's engine. Always confirm fitment for your specific model before starting your build.
What displacement increase will these pistons give my engine?
Displacement gains depend on the bore size and your original engine configuration. Refer to S&S Cycle's specifications for your exact engine model to confirm.
Do I need a complete engine rebuild to install these?
Power Packs are typically installed as part of a top-end refresh or full engine build. We recommend having a qualified mechanic assess your engine before installation.
Will these pistons work with my existing cylinder heads?
These pistons are designed to work with various cylinder head configurations. We recommend consulting S&S Cycle documentation or your engine builder to ensure compatibility with your specific setup.
| BRAND | S&S Cycle |
| TYPE | Piston Sets - Powersports |
| SKU | T14-1020390 |
| WEIGHT | 44.19 lb |
Have installed this kit on multiple bikes. S&S knows what they’re doing.
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!
5 Stars
I didn't get it yet,can't wait too get it in my bike, than ill leave a review