PISTON KIT 01-04 YZF250 77.00, 8572DA WOSSNER 2-RING, 5NL-11631-10-00

Wossner 2-Ring Forged Piston Kit - Pro Series

Elevate your engine's performance and durability with this Wossner Pro Series forged piston kit. Engineered in Germany, this piston is crafted for superior strength and optimal heat management, ensuring reliable power delivery and extended engine life.

The advanced forged construction provides exceptional resistance to high temperatures and pressures commonly found in demanding performance applications. Wossner's innovative elliptical design is a key feature, ensuring a uniform bearing surface even under extreme heat expansion. This intelligent design minimizes localized pressure points and distributes thrust loads evenly, effectively preventing piston collapse and reducing wear.

Designed with a two-ring configuration, this piston kit offers enhanced sealing capabilities for improved compression and reduced blow-by, contributing to both longevity and performance.

Key Features:

• Forged construction for superior strength and durability
• Engineered for optimized heat transfer from the combustion chamber
• Elliptical design ensures uniform bearing surface under heat expansion
• Reduces localized pressure and distributes thrust loads evenly to prevent piston collapse
• Pro Series design with a two-ring configuration for enhanced sealing and longevity
• Manufactured in Germany

Specifications:

• Bore: 76.96 mm
• Piston Size: 77.00 mm
• Displacement: 249 cm³
• Stroke: 53.60 mm
• Clearance: 0.04 mm
• Wossner Compression Ratio: 12.80:1
• OEM Compression Ratio: 12.50:1
• Dome Volume: -4.80 cm³
• Compression Height: 20.50 mm

Included Components:

• Lock: CW16
• Pin: WP059
• Ring Set: 770XAS
• Rod: P4006 / P4005

Replaces OEM Part Number: 5NL-11631-10-00