Wiseco PK1612 Pro-Lite Top End Piston Kit - 2-Stroke 71mm

The Wiseco PK1612 is a complete top-end piston kit engineered for 2-stroke dirt bike engines. Built on Wiseco's Pro-Lite forged platform, this kit delivers the performance and reliability that Wiseco has been known for since 1941. Whether you're rebuilding a worn top end or overboring your cylinder, this all-inclusive kit has everything needed to complete the job.

Kit Includes:

• Forged Pro-Lite piston — 71mm bore (forging code 439M)
• High-quality piston ring(s)
• Wrist pin
• Circlips
• Top-end gasket set

Key Features:

• Forged from high-strength aluminum alloy for superior tensile strength and service life
• Engineered, forged, and machined in the USA in Mentor, OH
• CNC-machined cam shape and profile optimized for peak horsepower and extended service life
• Dedicated forgings with additional lightening operations for an optimized strength-to-weight ratio
• Horizontal slot-pin oiling reduces friction and provides scuff resistance
• Pressure seal groove ensures maximum ring seal
• Designed specifically for 2-stroke powersports engine applications

Wiseco's Pro-Lite piston kits are the go-to choice for motocross and off-road riders seeking proven performance and long-lasting reliability. All components are Wiseco-specific — rings, clips, and wrist pins are not OEM-interchangeable and are designed to work exclusively with Wiseco pistons.