PISTON KIT 05-07 YZF250 77.00, WOSSNER 8612DA 2-RING, 5NL-11631-20-00
Wossner forged piston kit with a 77mm bore, 2-ring design, and standard size. This piston is engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision. Specifications include a 77mm bore, lock part number CW16, pin part number WP059, ring set part number 770XAS-2, 249 cm³ displacement, 53.6mm stroke, 0.04mm clearance, OEM compression ratio of 12.50:1, -2.80 cm³ dome volume, and 22.20mm compression height. Cross-reference OEM part numbers include 5NL-11631-20-00 and 5XC-11631-00-00.
- SKU
- 56-W188.A.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner 77mm Forged Piston Kit for Yamaha and Gas Gas Off-Road Motorcycles
Enhance the performance and durability of your off-road motorcycle with this Wossner forged piston kit. Engineered with precision in Germany, this kit features a 77mm bore and a two-ring design for optimal combustion and longevity.
Key Features:
- Forged Piston: Provides superior strength and a robust design capable of withstanding demanding riding conditions.
- Two-Ring Design: Optimized for enhanced performance and extended durability.
- Advanced Heat Transfer: Engineered for efficient heat transfer to cylinder walls, promoting consistent operating temperatures.
- Uniform Bearing Surface: Features an elliptical design that ensures a uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse for even thrust load distribution.
- German Manufacturing: Built to exacting standards in Germany, guaranteeing high quality and precision.
Specifications:
- Bore Size: 77.00mm
- Piston Type: Standard Size (PN# 8612DA)
- Lock Part Number: CW16
- Pin Part Number: WP059
- Ring Set Part Number: 770XAS-2
- Engine Displacement: 249 cm³
- Stroke: 53.6mm
- Piston Clearance: 0.04mm
- Dome Volume: -2.80 cm³
- Compression Height: 22.20mm
- Wossner Compression Ratio: OEM
- OEM Compression Ratio: 12.50:1
Cross-Reference OEM Part Numbers:
- 5NL-11631-20-00
- 5XC-11631-00-00
