Wiseco Black Edition Piston Kit 11.0:1 107ci - Harley Milwaukee-Eight
About Wiseco
Wiseco has forged pistons in Mentor, Ohio since 1941, supplying everything from factory race teams to big-bore street builds. Forged construction is what lets a V-twin survive higher compression and more cylinder pressure than the stock cast piston was designed for.
Unlock the full potential of your Milwaukee-Eight 107ci engine with the Wiseco Black Edition Piston Kit. Engineered for an aggressive 11.0:1 compression ratio, these pistons deliver a significant boost in power and torque. Each piston features advanced coatings for extreme durability and reduced friction, ensuring your M8 performs at its peak.
Why riders pick this
- 11.0:1 compression ratio for significant power gains
- Armor X coating provides extreme durability
- ArmorGlide skirt coating reduces friction and wear
- Optimized ring pack for superior sealing and oil control
- Designed for Milwaukee-Eight 107ci engines
- Compatible with OEM and Screamin' Eagle cylinder heads
The Wiseco Black Edition Piston Kit is purpose-built for riders demanding more from their Milwaukee-Eight 107ci engine. Raising the compression to 11.0:1, these pistons are designed to work seamlessly with both OEM and Screamin' Eagle cylinder heads, making them a versatile upgrade for a wide range of M8 builds. Every aspect, from the ring design to the proprietary coatings, is focused on maximizing performance and longevity.
Advanced Coatings and Design for M8 Performance
- Premium compression ring ensures superior cylinder sealing
- Napier second ring with taper face for optimal oil control
- 3mm oil ring design enhances tension and control for reduced consumption
- Armor X piston coating provides exceptional wear resistance
- ArmorGlide skirt coating reduces friction and promotes quieter operation
- Compatible with both stock and Screamin' Eagle cylinder heads
Building a High-Output M8
This Wiseco Black Edition Piston Kit is an essential upgrade for any Milwaukee-Eight 107ci owner looking to increase horsepower and torque. The higher compression ratio works best when paired with an aggressive cam and a precise dyno tune to fully optimize fuel and ignition timing. Whether you're building a performance bagger or a hot rod Softail, these pistons provide the robust foundation needed for a high-output M8 engine. They are assembled and ready to install, streamlining your build process.
Specifications
- Brand: Wiseco
- Manufacturer Part #: K2784
- Compression Ratio: 11.0:1
- Engine: M8 107cid
- Length: 9.5 in
- Width: 4.87 in
- Height: 4 in
- Weight: 2.77 lbs
- Country of Origin: United States of America
Common questions
Will these pistons work with my Screamin' Eagle heads?
Yes, Wiseco specifically designed this Black Edition Piston Kit to be compatible with both OEM factory cylinder heads and Screamin' Eagle performance heads for Milwaukee-Eight 107ci engines, without requiring modifications.
What compression ratio do these pistons provide?
This Wiseco Black Edition Piston Kit delivers an 11.0:1 compression ratio, which is a significant increase over stock and ideal for performance-oriented Milwaukee-Eight 107ci builds.
Are gaskets included with this piston kit?
No, this piston kit includes the pistons, rings, pins, and clips. Gasket sets are sold separately and must be purchased in addition to this kit for a complete installation.
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 | Wiseco |
| TYPE | Piston kits & Components |
| SKU | K2784 |
| WEIGHT | 2.77 lb |
| 11.0 | 1 Compression |
