Wiseco 594M05650 Pro-Lite 2-Stroke Dirt Bike Piston Kit 56.50mm Bore 0.50mm Oversize

The Wiseco 594M05650 is a Pro-Lite forged 2-stroke piston kit with a 56.50mm bore diameter, representing a 0.50mm oversize option for top-end engine rebuilds on compatible dirt bikes. As Wiseco's staple 2-stroke piston series, the Pro-Lite delivers a proven combination of performance, reliability, and value for both track and trail riding.

Key Features:

• Forged high-silicon, low-expansion aluminum alloy construction offers superior strength, reduced weight, improved heat transfer, and longer service life compared to OEM cast pistons
• CNC diamond-turned finish from computer-controlled turning centers ensures a perfect finish with no size variation
• Dedicated forging design provides a superior strength-to-weight ratio utilizing aerospace-grade alloy
• Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal
• Race-proven design chosen by top race teams across all forms of motorsport competition
• Compatible with all cylinder bore compositions including cast iron, chrome, Nikasil, and boron composite
• 0.50mm oversize bore — requires cylinder sleeving or reboring to the appropriate oversize diameter

Kit Includes:

• Forged Pro-Lite piston (56.50mm bore)
• Piston rings
• Wrist pin
• Circlips

Wiseco manufactures all pistons and forge tooling in-house in the USA, allowing full quality control from raw material to finished part. The Pro-Lite series is engineered for all-purpose 2-stroke riding and is a direct performance upgrade over stock OEM pistons.