2Bros Parts

PISTON KIT 05-09 CR250 66.40 B, WOSSNER 8171DB HONDA MX

$159.80

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Delivery to United States 5–8 business days

Spread the cost with Klarna

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Wossner piston kit with 66.41mm bore size, forged construction in Germany for strength and heat dissipation. Features an elliptical profile to maintain a uniform bearing surface under high temperatures, improving durability and performance. Forged piston for enhanced strength and longevity. Designed for efficient combustion heat transfer to cylinder walls. Elliptical design minimises localised pressure and reduces piston collapse risk. German-manufactured for precision and reliability. Specifications: Bore: 66.41 mm, Actual diameter: 66.35 mm, Clearance: 0.06 mm, Compression height: 38.00 mm, Display: 249 cm³, Stroke: 72.00 mm, Wossner compression ratio: 2-stroke, OEM compression ratio: 2-stroke.

Specifications
SKU
56-W860+00B.WO
Brand
Wossner
Availability
In Stock (2)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
66.40mm
Variant Id
258099
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit - 66.40mm Bore

Enhance the performance and durability of your motorcycle with this high-quality Wossner forged piston kit. Engineered in Germany, this piston is designed for superior strength and efficient heat dissipation, ensuring reliable operation under demanding conditions.

The unique elliptical profile of the piston plays a crucial role in maintaining an even bearing surface, even at high temperatures. This design helps to prevent localized pressure and reduces the risk of piston collapse, leading to extended component life and consistent power output.

Key Features:

  • Forged piston construction for exceptional strength and longevity.
  • Optimized for efficient transfer of combustion heat to the cylinder walls.
  • Elliptical design minimizes localized pressure and reduces the risk of piston collapse.
  • Precision manufacturing in Germany ensures high reliability and performance.

Specifications:

  • Bore Size: 66.40 mm
  • Actual Piston Diameter: 66.35 mm
  • Piston Clearance: 0.06 mm
  • Compression Height: 38.00 mm
  • Displacement: 249 cm³
  • Stroke: 72.00 mm
  • Type: 2-stroke
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

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

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

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.

More answers in our FAQ.

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