Wiseco PK1896 88mm 13:1 High Compression Piston Kit with Top-End Gasket Set

The Wiseco PK1896 is a complete top-end rebuild piston kit featuring an 88.00mm standard bore forged piston at a 13:1 high-compression ratio. Designed as a direct-fit solution for overboring or rebuilding a 4-stroke single-cylinder engine's top end, this kit includes every critical component needed for a thorough and reliable rebuild.

Key Features:

• Forged aluminum piston — manufactured using Wiseco's exclusive USA-based forging process for superior strength, density, and grain alignment over cast alternatives
• 88.00mm bore diameter with Wiseco part number 40090M for precise cylinder fitment
• 13:1 high-compression ratio for increased power output in performance and race applications
• High-quality piston rings engineered to create a tight cylinder seal, improving power transfer and reducing friction
• Wrist pin included — precision-engineered for strength and accurate piston alignment
• Circlips included — secure retention of the wrist pin for reliable, worry-free operation
• Top-end gasket set included — everything needed for a complete top-end rebuild in one kit

Wiseco is the only aftermarket piston manufacturer in the United States that produces pistons strictly through the forging process. Starting with aerospace-grade aluminum, the forging process compresses the material's molecules, increasing density and aligning the grain flow of the alloy — resulting in a piston that is highly resistant to impact and fatigue. Each piston is designed and built to the tightest tolerances using 3D design techniques and finite element modeling software to deliver the ultimate combination of performance and strength.