Wiseco PK1670 Top End Piston Kit 77mm for Suzuki RM-Z250

The Wiseco PK1670 is a complete top end piston kit designed for the Suzuki RM-Z250, featuring a 77mm (4921M) bore and a high-performance 13.4:1 compression ratio. This all-inclusive kit provides everything needed to properly rebuild or overbore a 4-stroke top end in a single purchase.

Kit Includes:

• Forged aluminum piston (77mm / 4921M)
• High-performance piston rings
• Alloy wrist pin
• Circlips
• Complete top end gasket set

Key Features:

• Forged from aerospace-grade aluminum alloy for a superior strength-to-weight ratio and extended service life
• Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH
• Dedicated forgings designed specifically for this engine application, built to tight tolerances for optimal performance and reliability
• Race-proven design trusted by top teams in Supercross, Motocross, GNCC, and Superbike competition
• Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions

Wiseco PK kits include a complete top end gasket set, making this a true one-stop solution for your engine rebuild. Whether restoring a worn engine or upgrading to oversize, the PK1670 delivers the performance and durability that Wiseco is known for.