PISTON KIT 1986 KX125 56.50, WOSSNER 8211D050 KAWASAKI MX
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
Wossner forged piston kit with a 56.50mm bore (56.44mm actual) and +0.50mm oversize. Features an elliptical design for balanced load distribution and efficient heat transfer. Manufactured in Germany. Specifications include a 29.70mm compression height, 0.06mm clearance, 50.60mm stroke, 211 cm³ displacement, and a 2-stroke compression ratio. Included components: Piston (Wossner 8211D050), Lock (CW16), Pin (WP036), Ring Set (RSB5650), Rod (P2037). Weight: 212 grams.
- SKU
- 56-W540.050.WO
- Brand
- Wossner
- Availability
- In Stock (2)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 125 | 1985 |
| KAWASAKI | KX 125 | 1986 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 56.5mm
- Variant Id
- 256715
FULL DESCRIPTION
Wossner Forged Piston Kit - 56.50mm Bore
Enhance the performance and durability of your Kawasaki KX125 with this Wossner forged piston kit. Featuring a 56.50mm bore (56.44mm actual), this +0.50mm oversize piston is engineered in Germany for superior strength and thermal efficiency.
The advanced elliptical piston design ensures balanced load distribution under high temperatures, reducing stress and minimizing the risk of premature failure. This kit is designed to meet standard 2-stroke specifications and includes all necessary components for a complete installation.
Key Features
- Forged construction for exceptional strength and longevity.
- Optimized for efficient heat transfer from the combustion chamber.
- Elliptical profile promotes even load distribution and reduces localized pressure.
- Precision manufactured in Germany.
- Oversize (+0.50mm) piston suitable for the Kawasaki KX125.
Specifications
- Bore Size: 56.50mm (actual 56.44mm)
- Compression Height: 29.70mm
- Clearance: 0.06mm
- Stroke: 50.60mm
- Display Displacement: 211 cm³
- Compression Ratio: 2-stroke
Included Components
- Piston: Wossner 8211D050
- Lock: CW16
- Pin: WP036
- Ring Set: RSB5650
- Rod: P2037
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us 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.