Description
The Wiseco K1641 Piston Kit delivers the reliability and precision your Evolution Big Twin demands, whether you’re rebuilding a tired top-end or overboring for increased displacement. High-silicon aluminum construction provides the thermal stability and strength needed for consistent performance across demanding riding conditions. This complete kit eliminates guesswork by including everything required for a proper rebuild—forged pistons, precision rings, wrist pins, and circlips—so you can focus on installation rather than sourcing individual components.
- 3.508-inch bore size
- 8.5:1 compression ratio
- High-silicon aluminum alloy
- Forged piston construction
- Precision ring set included
- Wrist pins and circlips included
- Enhanced thermal stability
- 1994-1998 Harley-Davidson FLHR
- 1994-1998 Harley-Davidson FLHRCI
- 1994-1998 Harley-Davidson FLHRI
- Complete rebuild kit
- Overboring compatible
- Cylinder sleeve compatible
