4-Stroke Top End Kits:
The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for.
2-Stroke Top End Kits:
Wiseco's legacy is rooted in 2-stroke piston manufacturing and performance, dating over 80 years ago back to 1941. Today, Wiseco 2-stroke pistons are the result of decades of experience, incorporating the latest in 2-stroke piston manufacturing and design to deliver the performance Wiseco built its name on.
Features of Both Top End Kits:
- Engineered, forged, and machined in the U.S.A. in Mentor, OH.
- Designed and built for each specific 2-stroke or 4-stroke powersports engine.
- Improved tensile strength of forged material optimizes strength and service life.
- Dedicated forgings and additional lightening operations (2-stroke) allow for optimized strength-to-weight ratio.
- Includes high-quality piston rings, wrist pin(s), and circlips.
- Note: Product Images may differ from the actual product. Image may be a representation of this item.
Detailed Specifications:
- Bore diameter: 81.00.
- Compression ratio - actual: 13:1.
- Included components: Piston #4690M08100, Ring Set #3189XG, Wrist Pin #S520, Circlip #CW20, Gasket #W6028.
- Piston diameter: 80.95.
- Piston material: 2618.
- Piston oversize: STD.
- Product series: 4 Stroke Forged Series.
- Product types: Top End Kits.
- Skirt coating: No.
