Wössner Pistons 8957DA Piston Kit for Yamaha Standard Bore - YZ250F A

The Wössner Pistons 8957DA is a high-performance piston kit engineered specifically for Yamaha YZ250F motocross bikes. This standard bore piston kit represents premium German engineering designed to deliver maximum performance and reliability in demanding off-road racing conditions.

Key Features:

• Precision-forged from high-silicon aluminum alloy for exceptional strength and heat dissipation
• Standard bore sizing (A classification) ensures proper fit for stock cylinder dimensions
• Complete kit includes piston, rings, wrist pin, and circlips for convenient installation
• Low-friction skirt coating reduces engine friction and extends component life
• CNC-machined ring grooves provide optimal ring sealing and performance
• Molybdenum-coated skirt for reduced break-in time and improved wear resistance
• Designed to meet or exceed OEM specifications

Wössner is renowned for manufacturing premium forged pistons used by professional race teams worldwide. This piston kit provides the durability and performance needed for competitive motocross racing while maintaining excellent reliability for recreational riders. The standard bore sizing makes this kit ideal for fresh rebuilds or maintenance on engines within standard wear tolerances.