PISTON KIT 84-85 CR250 66.50, WOSSNER 8156D050 HONDA MX
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Wossner piston kit with a 66.50 mm bore size and an actual piston diameter of 66.44 mm. Forged in Germany for strength and efficient thermal performance, this piston promotes effective heat transfer from the combustion chamber to the cylinder walls. Its elliptical profile ensures uniform bearing contact during thermal expansion, helping to distribute thrust loads evenly and reduce the risk of piston failure. Specifications include a 246 cm³ displacement, 72.00 mm stroke, 0.06 mm clearance, and 38.00 mm compression height. This is a 2-stroke piston kit with a Wossner compression ratio and OEM compression ratio. Wossner Piston Part Number: 8156D050. Includes Lock Part Number: CW18, Pin Part Number: WP033, and Ring Set Part Number: RSB6650 x2. Alternate Part Number: 56-W526.P2.WO. Weight: 328 grams.
- SKU
- 56-W526.P2.WO
- Brand
- Wossner
- Availability
- In Stock (1)
Fitments (9)
| Make | Model | Year |
|---|---|---|
| HONDA | ATC R 250 | 1985 |
| HONDA | ATC R 250 | 1986 |
| HONDA | CR 250 | 1984 |
| HONDA | CR 250 | 1985 |
| HONDA | TRX 250 | 1985 |
| HONDA | TRX 250 | 1986 |
| HONDA | TRX 250 | 1987 |
| HONDA | TRX 250 | 1988 |
| HONDA | TRX 250 | 1989 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 66.5mm
- Variant Id
- 256691
FULL DESCRIPTION
Wossner Piston Kit for Honda CR250R and ATAC250
This Wossner piston kit is engineered for strength and efficient thermal performance. Manufactured in Germany, this forged piston promotes effective heat transfer from the combustion chamber to the cylinder walls. The piston's elliptical profile ensures uniform bearing contact during thermal expansion, helping to distribute thrust loads evenly and reduce the risk of piston failure.
Key Features
- Forged piston for increased structural integrity
- Engineered for optimal heat transfer efficiency
- Elliptical shape reduces localized pressure under heat expansion
- Manufactured in Germany
Specifications
- Bore size: 66.50 mm
- Actual piston diameter: 66.44 mm
- Display (cm³): 246
- Stroke: 72.00 mm
- Clearance: 0.06 mm
- Compression height: 38.00 mm
- Wossner compression ratio: 2-stroke
- OEM compression ratio: 2-stroke
Component Part Numbers
- Wossner Piston Part Number: 8156D050
- Lock Part Number: CW18
- Pin Part Number: WP033
- Ring Set Part Number: RSB6650 x2
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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.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
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