PISTON 99-09 TM250 66.4 DOME, WOSSNER 8137DB FORGED KIT, SINGLE RING
Wossner forged piston kit 56-W021.B.WO for 2-stroke engines, 66.4mm bore, domed design. Features forged construction for durability, optimized heat transfer, elliptical design to prevent localized pressure and piston collapse, and a single-ring configuration for reduced friction. Specifications include 66.34mm bore, 66.41mm piston size, 249cm³ displacement, 72.00mm stroke, 0.07mm clearance, 2-stroke compression ratio, domed dome volume, and 38.00mm compression height. Compatible with CW18 lock, WP033 pin, and RSB6640 x2 ring set. Manufactured in Germany.
- SKU
- 56-W021.B.WO
- Brand
- Wossner
- Availability
- In Stock (2)
FULL DESCRIPTION
Wossner Forged Piston Kit for 2-Stroke Engines
This Wossner forged piston kit is engineered for exceptional strength and performance in 2-stroke motorcycle engines. Manufactured in Germany, it is designed for optimal heat transfer from the combustion chamber to the cylinder walls, ensuring efficient operation. The innovative elliptical design provides a uniform bearing surface even under heat expansion, effectively reducing localized pressure and distributing thrust loads evenly to prevent piston collapse.
Key Features:
- Forged Construction: Offers superior durability and strength for demanding applications.
- Optimized Heat Transfer: Enhances engine performance by efficiently managing heat.
- Elliptical Design: Prevents localized pressure points and ensures even load distribution, safeguarding against piston collapse.
- Domed Piston: Features a domed top for increased combustion efficiency.
- Single-Ring Configuration: Minimizes friction and contributes to improved overall performance.
Specifications:
- Bore: 66.34 mm
- Piston Size: 66.41 mm
- Displacement: 249 cm³
- Stroke: 72.00 mm
- Clearance: 0.07 mm
- Dome Volume: Domed
- Compression Height: 38.00 mm
Included Components:
- Wossner Forged Piston
- Lock: CW18
- Pin: WP033
- Ring Set: RSB6640 x2


