2Bros Parts

PISTON KIT 87-08 YFZ350 65.25, WOSSNER 8075D125 YAMAHA ATV

£126.52

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Wossner forged piston kit with a 65.25mm bore (65.19mm actual) for Yamaha two-stroke engines. Manufactured in Germany, it features forged construction and an elliptical design for enhanced structural integrity, improved heat transfer, and uniform load distribution to reduce piston collapse under thermal stress. Specifications include a 347 cm³ display volume, 54.00 mm stroke, 0.06 mm clearance, and 36.00 mm compression height. Compression ratio is 2-stroke (Wossner and OEM). Cross-reference OEM part numbers: Piston 8075D125, Lock CW16, Pin WP027, Ring Set RSB6525 x 2. Weight is 306 grams.

Specifications
SKU
56-W513+125.WO
Brand
Wossner
Availability
In Stock (2)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
65.25mm
Variant Id
256629
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit - 65.25mm Bore

This Wossner forged piston kit features a 65.25mm bore (65.19mm actual) and is engineered for high-performance two-stroke engines. Manufactured in Germany, its forged construction and elliptical design provide superior strength, enhanced heat transfer, and uniform load distribution, effectively reducing piston collapse under thermal stress. This kit is designed for optimal performance and durability in demanding applications.

Key Features

  • Forged piston construction for exceptional strength and longevity.
  • Engineered for efficient heat transfer from the combustion chamber to the cylinder walls.
  • Elliptical profile promotes even pressure distribution during thermal expansion.
  • Precision manufactured in Germany.

Specifications

  • Bore Size: 65.25mm (actual 65.19mm)
  • Display Volume: 347 cm³
  • Stroke: 54.00 mm
  • Clearance: 0.06 mm
  • Compression Height: 36.00 mm
  • Compression Ratio: 2-stroke (Wossner and OEM compatible)

Component Cross-References

  • Piston: 8075D125
  • Lock: CW16
  • Pin: WP027
  • Ring Set: RSB6525 x 2
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