Wiseco 2434M06950 Pro-Lite 2-Stroke Piston Kit Standard Bore 69.50mm Ski-Doo Mach Z 780

The Wiseco 2434M06950 is a Pro-Lite forged 2-stroke piston kit designed as a standard bore (69.50mm) replacement for the Ski-Doo Formula Mach Z and Mach ZLT 780 series snowmobile engines. Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH, this piston delivers the proven reliability and performance Wiseco is known for in 2-stroke powersports applications.

Key Features:

• Forged high-silicon, low-expansion aluminum alloy construction for superior strength, reduced weight, improved heat transfer, and extended service life
• Standard bore size: 69.50mm (piston diameter 69.37mm) — designed for cast iron bore cylinders
• Dedicated Pro-Lite forging with optimized strength-to-weight ratio via additional lightening operations
• Designed for reed induction 2-stroke engines
• Complete kit includes piston, high-performance ring set (2736CD), wrist pin (S511), and circlips (CW18)
• CNC precision machined for accurate fit and consistent performance
• Compatible with Ski-Doo 779/780 series engines — Formula Mach Z and Mach ZLT applications

Also referenced as Wiseco part 2384PS and replaces Ski-Doo OEM part number 420-8861-15. Oversize bore versions are available in 0.020" (2434M07000), 0.040" (2434M07050), and 0.060" (2434M07100) increments for engines requiring cylinder resizing.