2Bros Parts

PISTON KIT XR XLR 500 91.00, FORGED WOSSNER 8642D200

$245.09Only 1 left

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Wossner forged piston kit with a 91mm bore (90.94mm) and part number 8642D200. This kit includes lock part number CW21, pin part number WP034, and ring set part number 910XSY. Designed for superior strength and heat transfer efficiency, this piston ensures optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany. Specifications: Bore Size 91mm (90.94mm), Compression Ratio 9.0:1, Displacement 449 cm³, Stroke 64.00mm, Clearance 0.06mm, OEM Compression Ratio 8.6:1, Dome Volume +0.00 cm³, Compression Height 29.70mm.

Specifications
SKU
56-W310+200
Brand
Wossner
Availability
In Stock (1)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
91mm
Variant Id
255380
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit - 91.00mm Bore

Upgrade your engine's performance and durability with this Wossner forged piston kit. Engineered for superior strength, this piston is designed to withstand higher combustion pressures and temperatures compared to cast pistons. Its advanced elliptical design ensures even distribution of thrust loads, which helps prevent localized pressure and reduces the risk of piston collapse, even under extreme operating conditions. Manufactured to exacting standards in Germany, this kit provides optimal combustion efficiency and reliability.

Key Features:

  • Forged Construction: Provides significantly increased strength and longevity.
  • Optimized Heat Transfer: Enhances thermal efficiency for improved performance.
  • Elliptical Piston Design: Promotes a uniform bearing surface as the piston expands with heat, reducing wear.
  • Even Thrust Load Distribution: Prevents localized stress and reduces the likelihood of piston failure.
  • German Manufacturing: Ensures high quality and precision engineering.

Specifications:

  • Bore Size: 91.00mm (actual measurement 90.94mm)
  • Compression Ratio: 9.0:1
  • Piston Kit Part Number: 8642D200
  • Lock Pin Part Number: CW21
  • Wrist Pin Part Number: WP034
  • Ring Set Part Number: 910XSY
  • Displacement: 449 cm³
  • Stroke: 64.00mm
  • Piston Clearance: 0.06mm
  • Original Equipment Manufacturer (OEM) Compression Ratio: 8.6:1
  • Dome Volume: +0.00 cm³
  • Compression Height: 29.70mm
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Call or email us with your make, model and year and we will check it for you before you order.

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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