Wiseco PK1887 96mm 12.5:1 CR Top End Piston Kit for Honda CRF450R

The Wiseco PK1887 is a complete top end piston kit engineered specifically for the Honda CRF450R, featuring a 96.00mm standard bore and a high-compression 12.5:1 compression ratio. Designed for serious motocross and off-road riders who demand maximum reliability and performance during top end rebuilds or overbore projects, this kit delivers everything needed to complete the job in one package.

Kit Includes:

• Wiseco forged piston (96.00mm bore)
• High-performance piston ring set
• Hardened wrist pin
• Circlips
• Complete top end gasket kit

Key Features:

• Forged from aerospace-grade aluminum for superior strength and durability versus cast pistons
• Dedicated forging design optimizes strength-to-weight ratio for each specific engine application
• Engineered, forged, and machined in the USA (Mentor, OH)
• Built to tight tolerances for the ultimate combination of performance and long service life
• Computer-engineered piston skirt profiles minimize cylinder wall friction
• Race-proven design trusted by top teams in Supercross, Motocross, and GNCC competition
• Wiseco piston rings are matched specifically to Wiseco pistons — do not interchange with other ring brands

The Wiseco PK1887 top end kit simplifies the rebuild process with premium, matched components sourced from a single manufacturer. Whether refreshing a worn top end or overboring for added displacement, this kit provides the confidence of Wiseco's decades of forged piston expertise in one convenient package.