PISTON KIT 05 YZF/WR450F 95 HC, WOSSNER 8647DC
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 high compression for performance. Engineered for optimal heat transfer to cylinder walls, ensuring efficient combustion. The 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 to high-quality standards. Features include a high-compression forged piston, optimized heat transfer, elliptical design, and German manufacturing. Specifications: Bore Size 95.02mm, Actual Bore Diameter 94.97mm, Displacement 449 cm³, Stroke 63.40mm, Clearance 0.05mm, Wossner Compression Ratio 13.50:1, OEM Compression Ratio 12.30:1, Dome Volume -6.30 cm³, Compression Height 23.50mm. Included components: Lock Part Number CW18, Pin Part Number WP053, Ring Set Part Number 950ADS-2, Rod Part Number P4007. Weight 400g.
- SKU
- 56-W202.C.WO
- Brand
- Wossner
- Availability
- In Stock (1)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WRF 450 | 2005 |
| YAMAHA | YZF 450 | 2005 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 95mm
- Variant Id
- 254974
FULL DESCRIPTION
Wossner High Compression Forged Piston Kit - 95mm Bore
Upgrade your motorcycle's performance with the Wossner High Compression Forged Piston Kit. Engineered in Germany, this kit is designed for demanding riders seeking enhanced power and efficiency. The advanced forged construction ensures durability and optimal performance under high-stress conditions.
Key Features:
- High-compression forged piston for maximum performance gains.
- Precisely engineered for optimized heat transfer to cylinder walls, promoting efficient combustion and engine longevity.
- Features an innovative elliptical design that maintains a uniform bearing surface under heat expansion.
- This design effectively reduces localized pressure and evenly distributes thrust loads, preventing piston collapse and ensuring consistent operation.
- Manufactured to exacting German quality standards for reliability.
Specifications:
- Bore Size: 95.02mm
- Actual Bore Diameter: 94.97mm
- Displacement: 449 cm³
- Stroke: 63.40mm
- Piston Clearance: 0.05mm
- Wossner Compression Ratio: 13.50:1
- OEM Compression Ratio: 12.30:1
- Dome Volume: -6.30 cm³
- Compression Height: 23.50mm
Included Components:
- Lock Part Number: CW18
- Pin Part Number: WP053
- Ring Set Part Number: 950ADS-2
- Rod Part Number: P4007
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.