PISTON KIT 06-09 KXF250 77 HC, FORGED WOSSNER 8686DB
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
Wossner 77.01mm high-compression forged piston kit for Kawasaki KX250F (2006-2009). Features an elliptical design for uniform bearing surface and even thrust load distribution to prevent piston collapse. Manufactured in Germany. Specifications include a bore size of 77.01mm (76.97mm), 13.9:1 compression ratio, part number 8686DB, lock part number CW16, pin part number WP070, ring set part number 770XAS-2, rod part number P4002, 250 cm³ displacement, 53.60mm stroke, 0.04mm clearance, 13.2:1 OEM compression ratio, -3.40 cm³ dome volume, and 19.60mm compression height.
- SKU
- 56-W302+00B.WO
- Brand
- Wossner
- Availability
- In Stock (17)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77mm
- Variant Id
- 255341
FULL DESCRIPTION
Wossner Forged High-Compression Piston Kit - 77.01mm Bore
Enhance the performance of your motorcycle with this Wossner forged high-compression piston kit. Engineered for superior strength and optimized combustion, this piston is designed to deliver exceptional results.
The advanced elliptical design promotes even thrust load distribution, effectively reducing localized pressure and preventing piston collapse, even under extreme operating conditions. This ensures a uniform bearing surface under heat expansion for reliable and consistent performance.
Key Features:
- High-compression forged piston for increased power output.
- Optimized heat transfer for improved operational efficiency.
- Elliptical design ensures uniform bearing surface during thermal expansion.
- Even thrust load distribution to prevent piston collapse.
- Precision manufactured in Germany for quality assurance.
Specifications:
- Bore Size: 77.01mm (76.97mm)
- Compression Ratio: 13.9:1
- Part Number: 8686DB
- Lock Part Number: CW16
- Pin Part Number: WP070
- Ring Set Part Number: 770XAS-2
- Rod Part Number: P4002
- Displacement: 250 cm³
- Stroke: 53.60mm
- Clearance: 0.04mm
- OEM Compression Ratio: 13.2:1
- Dome Volume: -3.40 cm³
- Compression Height: 19.60mm
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.