PISTON KIT 85-87 YZ80 50.00, WOSSNER 8186D200 YAMAHA MX

Wossner Piston Kit for Yamaha YZ80 (1985-1987)

Enhance the performance and reliability of your Yamaha YZ80 with this premium Wossner Piston Kit. Specifically engineered for models from 1985 to 1987, this kit features a precisely machined 50.00 mm bore size with an actual piston diameter of 49.95 mm. Manufactured in Germany, Wossner pistons are renowned for their high-strength forged construction, ensuring exceptional durability and efficient heat transfer directly from the combustion chamber to the cylinder walls. The advanced elliptical design of the piston guarantees a uniform bearing surface, even under extreme heat expansion, effectively minimizing localized stress and significantly reducing the risk of piston failure.

Key Features:

• Forged Piston Construction: Provides superior strength and resilience for high-stress operating conditions.
• Optimal Heat Transfer: Designed to efficiently dissipate combustion heat, contributing to engine longevity.
• Elliptical Piston Profile: Ensures even distribution of thrust loads for reduced wear and improved performance.
• German Engineering: Manufactured with precision and quality standards expected from German production.

Specifications:

• Bore Size: 50.00 mm
• Actual Piston Diameter: 49.95 mm
• Displacement (cm³): 82
• Stroke: 45.60 mm
• Clearance: 0.05 mm
• Compression Height: 26.80 mm
• Wossner Compression Ratio: 2-stroke
• OEM Compression Ratio: 2-stroke

Included Components & Part Numbers:

• Wossner Piston Part Number: 8186D200
• Lock Part Number: CW12
• Pin Part Number: WP091
• Ring Set Part Number: RSB5000
• Cross-Reference Part Number: 56-W520+