2Bros Parts

PISTON KIT 82-83 YZ80 47.00, FORGED WOSSNER 8185DA 3R1-11630-02-00

£88.94Only 1 left

4.1 Trustpilot 99.9% positive on eBay

Free UK delivery 2–4 business days

Spread the cost with Klarna 18+, T&Cs apply

1

Wossner 47mm Bore Piston Kit (PN# 8185DA) is a forged piston designed for high strength, efficient heat transfer, and durability. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany, this piston meets OEM compression standards. Features include a high-strength forged piston for durability and performance, optimized heat transfer for efficient combustion, and an elliptical design that prevents piston collapse and ensures even load distribution. Specifications: Bore: 47mm, Actual diameter: 46.95mm, Display (cm³): 79, Stroke (mm): 55.50, Clearance (mm): 0.05, Compression Ratio: OEM, OEM Compression Ratio: 11.10:1, Dome Volume (cm³): -0.20, Compression Height (mm): 22.80. Cross-Reference OEM Part Numbers: Lock: CW12, Pin: WP091, Ring Set: RSB4700, OEM Part Number: 3R1-11630-02-00.

Specifications
SKU
56-W477+000.WO
Brand
Wossner
Availability
In Stock (1)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
47mm
Variant Id
256041
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner 47mm Forged Piston Kit

This Wossner forged piston kit, part number 8185DA, is engineered for optimal performance and durability. Crafted in Germany, it features a high-strength forged construction that ensures longevity and efficient heat transfer for superior combustion. The innovative elliptical design provides a consistent bearing surface even under extreme operating temperatures, effectively reducing localized pressure and distributing thrust loads evenly to prevent piston collapse.

Designed to meet OEM compression standards, this piston kit offers a precise fit and reliable operation.

Key Features:

  • High-strength forged construction for enhanced durability.
  • Efficient heat transfer for improved combustion performance.
  • Elliptical design to prevent piston collapse and ensure uniform load distribution.
  • Manufactured in Germany to exacting standards.
  • Meets OEM compression ratios.

Specifications:

  • Bore: 47.00mm
  • Actual Diameter: 46.95mm
  • Display (cm³): 79
  • Stroke (mm): 55.50
  • Clearance (mm): 0.05
  • Compression Ratio: OEM
  • OEM Compression Ratio: 11.10:1
  • Dome Volume (cm³): -0.20
  • Compression Height (mm): 22.80

Component Details:

  • Lock: CW12
  • Pin: WP091
  • Ring Set: RSB4700
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.

Call or email us with your make, model and year and we will check it for you before you order.

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

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.

More answers in our FAQ.

Trade pricing available

Buying parts for your business? Apply for a 2BrosParts trade account.

Apply for Trade
1