Wiseco PK1671 Pro-Lite Top End Piston Kit 77mm for Suzuki RM-Z250

The Wiseco PK1671 is a complete Pro-Lite top end piston kit engineered for the 2007–2008 Suzuki RM-Z250. Featuring a 77mm bore diameter (forging code 4928M), this kit delivers everything needed for a full top-end rebuild or cylinder overbore in a single package.

Wiseco's Pro-Lite forged pistons are built from high-silicon, low-expansion aerospace aluminum alloy, offering superior strength-to-weight ratio, improved heat transfer, and extended service life compared to cast alternatives. Each piston is forged using dedicated forgings — not generic blanks — ensuring a precise fit and optimized performance for this specific engine application.

Kit Includes:

• Forged Wiseco Pro-Lite piston (77mm / 4928M forging)
• High-performance piston ring set
• Hardened alloy wrist pin
• Circlips
• Complete top end gasket set

Key Features:

• Dedicated aerospace alloy forging for superior strength-to-weight ratio
• Race-proven piston design trusted by top Supercross, Motocross, and GNCC competitors
• Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Precision-matched ring and pin components included for a complete, one-stop rebuild
• Manufactured in the USA at Wiseco's state-of-the-art CNC machining facility

The Wiseco PK1671 is the preferred choice for riders and builders who demand OEM-beating durability and consistent power delivery from their RM-Z250 top end rebuild.