PISTON KIT 83-87 YZ250 69.00, WOSSNER 8133D100 YAMAHA MX
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
The Wossner 8133D100 piston kit features a 69mm bore (68.94mm actual) and is designed for Yamaha YZ250 models. Manufactured in Germany, this forged piston offers excellent strength and optimised heat dissipation, thanks to its elliptical shape that promotes uniform load distribution and prevents piston collapse during thermal expansion. Features include a forged piston design for enhanced durability and strength, elliptical profile for balanced load distribution under heat expansion, optimised heat transfer from the combustion chamber to the cylinder walls, and engineering for two-stroke engines. Specifications include a bore size of 69mm (actual: 68.94mm), display displacement of 246 cm³, stroke of 68.00 mm, piston-to-wall clearance of 0.06 mm, compression height of 36.00 mm, and compression ratio (Wossner & OEM) of 2-stroke. Cross-reference OEM part numbers include Piston Kit: 8133D100, Lock: CW18, Pin: WP033, Ring Set: RSB6900 x 2, and Rod: P2048. The weight is 336 grams.
- SKU
- 56-W560+100.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 69mm
- Variant Id
- 256835
FULL DESCRIPTION
Wossner 8133D100 Piston Kit 69mm for Yamaha YZ250
Enhance the performance and durability of your motorcycle with the Wossner 8133D100 Piston Kit. This high-quality, forged piston is engineered for optimal strength and heat dissipation, ensuring reliable performance for your two-stroke engine.
Key Features:
- Forged piston design for superior strength and longevity.
- Elliptical profile promotes uniform load distribution, preventing collapse during thermal expansion.
- Optimised heat transfer from the combustion chamber to the cylinder walls for improved efficiency.
- Specifically engineered for two-stroke engines.
- German-manufactured for precision and quality.
Specifications:
- Bore Size: 69mm (Actual measurement: 68.94mm)
- Piston-to-Wall Clearance: 0.06 mm
- Compression Height: 36.00 mm
- Stroke: 68.00 mm
- Display Displacement: 246 cm³
- Compression Ratio: 2-stroke (Wossner & OEM)
Included Components:
- Piston Kit (Part Number: 8133D100)
- Lock Ring (Part Number: CW18)
- Piston Pin (Part Number: WP033)
- Ring Set (Part Number: RSB6900) x 2
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.