Wiseco 4718PS Forged Piston Kit Harley Evo to Overbore Compression - 883 1200 9.5 1

The Wiseco 4718PS is a high-performance forged piston designed for the Harley-Davidson Evolution 883 engine overbored to 1200cc displacement, featuring a 9.5:1 compression ratio. This piston is purpose-built for riders looking to upgrade their Sportster 883 to 1200cc performance while maintaining exceptional reliability and durability.

Forged Aluminum Construction:

Wiseco pistons are forged from high-silicon, low-expansion aluminum alloy, delivering superior strength and reduced weight compared to cast alternatives. The forged process improves heat transfer and significantly extends service life under demanding conditions.

Key Features:

• 9.5:1 compression ratio for increased power output
• Forged high-silicon, low-expansion aluminum construction for maximum strength and longevity
• Diamond-turned CNC finish ensures precise sizing with zero variation between pistons
• Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Available in oversize options to restore worn cast iron lined cylinders to factory tolerances
• Manufactured to exacting tolerances in a state-of-the-art computerized production facility

The CNC diamond-turned finish guarantees a perfect, consistent surface with no size variation, allowing these pistons to be installed with confidence across all common cylinder bore types. Whether you're rebuilding a worn engine or performing a performance upgrade from 883 to 1200cc displacement, the Wiseco 4718PS delivers the precision and durability expected from one of the industry's most trusted piston manufacturers.