Wiseco K1600 HD 1000 Sportster Forged Piston Kit 3188X-4011PS

The Wiseco K1600 is a complete forged piston kit engineered for Harley-Davidson 1000cc Sportster engines. Wiseco's high-tech manufacturing process uses a high-silicon aluminum alloy to deliver superior strength, long service life, and consistent dimensions under demanding operating conditions. The alloy's composition minimizes thermal expansion at elevated temperatures, helping the engine maintain tight tolerances and reliable performance across its full operating range.

Each kit is sold as a complete assembly, giving you everything needed for a proper rebuild in one package. The pistons feature coated skirts to reduce friction and improve break-in, paired with chrome piston pins and retainer clips for secure, precise fitment.

Key Features:

• Forged high-silicon aluminum alloy construction for maximum strength and dimensional stability
• Coated piston skirts reduce friction and promote fast, clean break-in
• Chrome piston pins included for durability and precise fit
• Complete kit includes two pistons, rings, piston pins, and circlips
• Compatible with Hastings-style X-Ring package: .062" top ring, .062" compression ring, and .158" oil ring
• Cross-reference: 3188X-4011PS

Wiseco piston kits are a trusted choice for Sportster performance builds and engine rebuilds, delivering OEM-quality fitment with the added durability of forged construction.