2Bros Parts

PISTON KIT 01-04 YZF250 77.00, 8572DB WOSSNER 2-RING

£172.51

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Wossner Pro Series 2-ring forged piston kit with a 77.00 mm bore size. Engineered for superior strength and performance, this piston kit is designed for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany. Bore: 76.97 mm, Piston Size: 77.01 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. Includes lock CW16, pin WP059, ring set 770XAS, and rod P4006 / P4005.

Specifications
SKU
56-W022+00B.WO
Brand
Wossner
Availability
In Stock (3)
General Product Group
Engine
General Product Type
Pistons & Kits
Variant Id
254286
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner 2-Ring Forged Piston Kit

Experience enhanced strength and performance with the Wossner forged piston kit. This premium piston is engineered for superior heat transfer from the combustion chamber to the cylinder walls, ensuring optimal operating temperatures and efficiency. Its advanced elliptical design guarantees a uniform bearing surface even under heat expansion, effectively reducing localized pressure and evenly distributing thrust loads. This intelligent design prevents piston collapse and contributes to overall longevity.

Key Features:

  • Forged construction provides exceptional durability and strength.
  • Optimized heat transfer capabilities for improved engine performance.
  • Elliptical design minimizes localized pressure and prevents piston collapse.
  • Pro Series design with a two-ring configuration for superior sealing and extended lifespan.
  • Manufactured in Germany for precision and quality.

Specifications:

  • Bore: 76.97 mm
  • Piston Size: 77.01 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
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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

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