2Bros Parts

PISTON KIT 01-04 YZF250 79.00, 8572D200 WOSSNER 2-RING

$166.16

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Delivery to United States 5–8 business days

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Wossner Pro Series 2-ring forged piston kit. Bore 78.96 mm, piston size 79.00 mm. Features forged construction for durability, optimized heat transfer, and an elliptical design that prevents localized pressure and piston collapse by distributing thrust loads evenly. Manufactured in Germany. Specifications include a displacement of 249 cm³, stroke of 53.60 mm, clearance of 0.04 mm, Wossner compression ratio of 12.80:1 (OEM 12.50:1), dome volume of -4.80 cm³, and compression height of 20.50 mm. Includes lock CW16, pin WP059, ring set 770XAS, and rod P4006 / P4005. Weight 280g.

Specifications
SKU
56-W022+200.WO
Brand
Wossner
Availability
In Stock (2)
General Product Group
Engine
General Product Type
Pistons & Kits
Variant Id
254289
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit - Pro Series 2-Ring

This Wossner forged piston kit is engineered for superior strength and performance, designed to optimize heat transfer from the combustion chamber to the cylinder walls. Its unique elliptical design ensures a uniform bearing surface even under heat expansion. This design reduces localized pressure and distributes thrust loads evenly, effectively preventing piston collapse.

Key Features:

  • Forged construction for enhanced durability and strength.
  • Optimized heat transfer for improved engine performance.
  • Elliptical piston design prevents localized pressure and piston collapse.
  • Pro Series design features a two-ring configuration for enhanced sealing and longevity.
  • Manufactured in Germany to exacting standards.

Specifications:

  • Bore: 78.96 mm
  • Piston Size: 79.00 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
Before you buy

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Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. 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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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

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