Wiseco Pistons PK1830 Pro-Lite Top End Piston Kit Standard Bore - 2-Stroke 66.4mm

The Wiseco PK1830 is a complete Pro-Lite top end piston kit designed for the 1992 Kawasaki KX250, featuring a standard 66.40mm (2.614") bore. This all-inclusive kit provides everything needed to properly rebuild or overbore the top end of your 2-stroke engine in one convenient package.

About the Wiseco Pro-Lite Series:

The Pro-Lite is Wiseco's signature forged 2-stroke piston line, built from decades of racing heritage and engineered for all-purpose 2-stroke riding. Forged from high-silicon, low-expansion aluminum alloy, these pistons deliver superior strength, reduced weight, improved heat transfer, and extended service life compared to cast alternatives.

Key Features:

• Forged aluminum construction — high-silicon, low-expansion alloy for superior strength and durability
• CNC machined — precision cam shape and profile optimized for peak horsepower and service life
• Horizontal slot-pin oiling — reduces friction and provides scuff resistance
• Pressure seal groove — maximizes ring seal for optimal compression
• Standard bore: 66.40mm — direct replacement for stock cylinder dimensions
• 18mm wrist pin — non-chromed, high-alloy construction
• Race-proven design — trusted by top teams in Supercross, Motocross, GNCC, and more

Kit Contents:

• Forged Pro-Lite piston (66.40mm)
• Piston ring(s)
• 18mm wrist pin
• Round wire circlip pin locks (pair)
• Top end gasket kit

Wiseco PK-series top end kits are engineered and assembled to include all components required for a complete, professional-quality rebuild — eliminating the need to source individual parts separately. Manufactured at Wiseco's facility in Mentor, OH, USA.