PISTON KIT 1981 YZ80 50.00mm, FORGED WOSSNER 8184D100
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
Wossner 50mm Bore Piston Kit 8184D100 is a high-performance forged piston designed for the 1981 Yamaha YZ80. Engineered for durability and efficient heat transfer, it features an elliptical design to ensure even load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, this piston is specifically designed for two-stroke engines. Features include high-strength forged piston construction, optimized heat transfer for improved combustion efficiency, elliptical design for even thrust load distribution, and is designed for two-stroke applications. Specifications include a bore size of 50mm, actual bore diameter of 49.95mm, compression ratio of two-stroke, OEM compression ratio of two-stroke, displacement of 79cc, stroke of 42.00mm, clearance of 0.05mm, and compression height of 24.20mm. Cross-reference OEM part numbers include Lock P/N: CW12, Pin P/N: WP091, and Ring Set P/N: RSB5000.
- SKU
- 56-W465+100.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 50mm
- Variant Id
- 255819
FULL DESCRIPTION
Wossner 50mm Forged Piston Kit
Enhance your motorcycle's performance with the Wossner 50mm Bore Piston Kit. This high-performance forged piston is engineered for demanding two-stroke applications. Manufactured in Germany, it is built with precision to deliver superior durability and efficiency.
Key Features:
- High-Strength Forged Construction: Provides exceptional durability and resistance to extreme operating conditions.
- Optimized Heat Transfer: Promotes efficient combustion and helps maintain optimal engine temperatures.
- Elliptical Design: Ensures even load distribution across the piston surface, reducing localized pressure and preventing collapse.
- Two-Stroke Specific: Tailored for the unique demands of two-stroke engines.
- German Engineering: Manufactured with meticulous attention to detail and quality standards.
Specifications:
- Bore Size: 50.00mm
- Actual Bore Diameter: 49.95mm
- Compression Ratio: Two-stroke
- Displacement: 79cc
- Stroke: 42.00mm
- Clearance: 0.05mm
- Compression Height: 24.20mm
Component Part Numbers:
- Lock Piston Clip: CW12
- Piston Pin: WP091
- Ring Set: RSB5000
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.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.