PISTON KIT 96-09 TTR250 73.00, FORGEDWOSSNER 8646DA, 4GY-11631-00-C0
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 bore size of 73.00mm. Engineered for durability and high performance, this piston optimizes heat transfer for efficient combustion. Its elliptical design prevents piston collapse by providing a uniform bearing surface under heat expansion, evenly distributing thrust loads. Manufactured in Germany to high-quality standards. Includes lock part number CW18, pin part number WP031, and ring set part number 730XDS. Cross-references OEM part number 4GY-11631-00-C0. Specifications include: actual bore diameter 72.95mm, displacement 124 cm³, stroke 59.60mm, clearance 0.05mm, OEM compression ratio 10.20:1, dome volume +1.40 cm³, and compression height 23.60mm. Theoretical weight not specified.
- SKU
- 56-W198+00A.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 73mm
- Variant Id
- 254953
FULL DESCRIPTION
Wossner Forged Piston Kit
Experience enhanced durability and high performance with the Wossner Forged Piston Kit. Engineered for optimal heat transfer to cylinder walls, this kit ensures efficient combustion and superior engine operation. Its innovative elliptical design creates a uniform bearing surface under heat expansion, effectively reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany to exacting quality standards, this piston kit is built to last.
Key Features
- Forged piston construction for exceptional strength and longevity
- Optimized for efficient heat transfer, promoting effective combustion
- Elliptical piston design engineered to prevent collapse under stress
- Precision manufacturing standards uphold German engineering excellence
Specifications
- Bore Size: 73.00mm
- Actual Bore Diameter: 72.95mm
- Displacement: 124 cm³
- Stroke: 59.60mm
- Clearance: 0.05mm
- Wossner Compression Ratio: OEM
- OEM Compression Ratio: 10.20:1
- Dome Volume: +1.40 cm³
- Compression Height: 23.60mm
Included Components
- Lock Part Number: CW18
- Pin Part Number: WP031
- Ring Set Part Number: 730XDS
Cross-Reference OEM Part Numbers
- 4GY-11631-00-C0
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.