2Bros Parts

PISTON KIT4 YAMAHA YZF1000 78.00mm WOSSNER K8752D100-4 COMP 13:1

£793.43

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Wossner Piston Kit 78mm Bore. This kit features forged pistons superior in strength and design, engineered for optimal combustion chamber heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, eliminating localized pressure and distributing thrust loads evenly. Made in Germany. Cross reference numbers include WOSSNER FORGED PISTON K8752D100-4, Clip part no CW17, Piston pin WP0111, and Ring set 780XAS-2. Specifications: Display (cm3) 998 / 1023, Hub stroke (mm) 53.60, Clearance (mm) 0.04, Wossner compression Ratio 13.50:1, OEM Compression ratio 12.50:1, Dome volume (cm3) -4.70, Compression height (mm) 22.80. Offers unmatched reliability and performance from high-tech materials, manufactured to exacting standards. Meets or exceeds OEM quality. Direct OEM replacement. Please see image before ordering to avoid mistakes. Weight: 1366g.

Specifications
SKU
56-W9876.100.WO
Brand
Wossner
Availability
In Stock (3)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
78.00mm
Variant Id
259026
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Piston Kit for Yamaha YZF1000

This Wossner Piston Kit is engineered for superior strength and performance, designed to optimize combustion chamber heat transfer to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, preventing localized pressure and distributing thrust loads evenly for increased reliability.

Key Features:

  • Wossner forged pistons offer exceptional strength and advanced design.
  • Optimized for efficient combustion chamber heat transfer.
  • Elliptical design provides a more uniform bearing surface during heat expansion, eliminating localized pressure and distributing thrust loads evenly to prevent piston collapse.
  • Made in Germany to exacting standards.
  • Unmatched reliability and performance from high-tech materials.
  • Meets or exceeds OEM quality and serves as a direct OEM replacement.
  • Provides best value for money.

Specifications:

  • Bore: 78.00mm
  • Stroke: 53.60mm
  • Clearance: 0.04mm
  • Wossner Compression Ratio: 13.50:1
  • OEM Compression Ratio: 12.50:1
  • Dome Volume: -4.70cm3
  • Compression Height: 22.80mm
  • Display (cm3): 998 / 1023

This high-quality replacement part is designed for easy installation. We recommend using a professional if you are unsure.

Before you buy

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Call or email us with your make, model and year and we will check it for you before you order.

UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

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