PISTON KIT 00-06 KTM250 66.40, WOSSNER 8090DC FORGED
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Wossner forged piston kit with a 66.42mm bore for KTM SX250 2000-2002 models. This piston is constructed from high-strength forged material designed to withstand extreme thermal and mechanical conditions in high-performance 2-stroke engines. Features include forged piston construction for enhanced durability and load resistance, engineered heat transfer, elliptical design for consistent bearing surface during thermal expansion, reduced localised pressure points to prevent piston collapse, and precision manufacturing in Germany. Specifications: Bore 66.42mm, actual piston size 66.36mm, stroke 72.00mm, display volume 249cm³, clearance 0.06mm, compression ratio 2-stroke (Wossner and OEM), compression height 38.00mm. Cross-reference OEM part numbers: Piston Kit 8090DC, Lock CW18, Pin WP033, Ring Set RSB6640. Part number 56-W774.C.WO. Weight 306 grams.
- SKU
- 56-W774.C.WO
- Brand
- Wossner
- Availability
- In Stock (4)
Fitments (19)
| Make | Model | Year |
|---|---|---|
| KTM | 250 EXC | 2000 |
| KTM | 250 EXC | 2001 |
| KTM | 250 EXC | 2002 |
| KTM | 250 EXC | 2003 |
| KTM | 250 EXC | 2004 |
| KTM | 250 EXC | 2005 |
| KTM | 250 EXC | 2006 |
| KTM | 250 MXC | 2000 |
| KTM | 250 MXC | 2001 |
| KTM | 250 MXC | 2002 |
| KTM | 250 MXC | 2003 |
| KTM | 250 MXC | 2004 |
| KTM | 250 MXC | 2005 |
| KTM | 250 SX | 2000 |
| KTM | 250 SX | 2001 |
| KTM | 250 SX | 2002 |
| KTM | 250 SXS | 2000 |
| KTM | 250 SXS | 2001 |
| KTM | 250 SXS | 2002 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 66.40mm
- Variant Id
- 257736
FULL DESCRIPTION
Wossner Forged Piston Kit 66.42mm for KTM 250
This Wossner piston kit features a 66.42mm bore, offering a +0.02mm oversize for specific KTM 250 engines. Engineered from high-strength forged aluminum, this piston is designed to withstand the intense thermal and mechanical stresses encountered in high-performance two-stroke applications.
Key Features
- Forged piston construction for superior durability and resistance to extreme loads.
- Optimized design for efficient heat transfer from the combustion chamber to the cylinder wall, promoting consistent operating temperatures.
- Elliptical piston shape ensures a stable bearing surface throughout thermal expansion cycles.
- Reduces localized pressure points, preventing premature piston failure and collapse under stress.
- Precision manufactured in Germany to exacting standards.
Specifications
- Bore Size: 66.42 mm
- Actual Piston Diameter: 66.36 mm
- Stroke: 72.00 mm
- Displacement Volume: 249 cm³
- Recommended Piston Clearance: 0.06 mm
- Compression Ratio Type: 2-stroke (compatible with Wossner and OEM specifications)
- Compression Height: 38.00 mm
Wossner Components Included
- Piston Kit: 8090DC
- Piston Lock Ring: CW18
- Piston Pin: WP033
- Ring Set: RSB6640
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