| Size | 77mm |
|---|---|
| Product Type | Pistons & Kits |
| Product Group | Engine |
| Catalogue | DIRT |
| Piston Diameter | 77.00 |
| Bore Diameter | |
| Piston Grade | |
| Compression Ratio |
PISTON KIT 14- YZF250 77mm HC, FORGED WOSSNER 8894DB
This Wossner forged piston kit, part number 8893DB, features a 77.01mm bore with an actual piston size of 76.96mm (+0.01mm oversize). Designed for Yamaha YZF250 models from 2014 to 2015, this high-compression piston is manufactured in Germany and engineered for enhanced durability, efficient heat transfer, and optimal performance. Its elliptical profile ensures uniform expansion and balanced thrust loads during operation.
Features
- Forged construction for strength and high durability
- High compression design for improved performance
- Elliptical shape supports even expansion and load distribution
- Designed for efficient heat transfer from combustion chamber
- Made in Germany
- Direct OEM replacement
- Easy to install; professional installation recommended if unsure
Specifications
- Bore Size: 77.01mm
- Actual Piston Size: 76.96mm
- Displacement: 249cm³
- Stroke: 53.60mm
- Clearance: 0.05mm
- Dome Volume: -3.00cm³
- Wossner Compression Ratio: 13.70:1
- OEM Compression Ratio: 13.50:1
- Compression Height: 20.20mm
Cross-Reference OEM Part Numbers
- 1SM-11631-01-00
- CW16 (Lock)
- WP087 (Pin)
- 770XAS-2 (Ring Set)
Vehicle Fitments
- YZF250 (2014–2015)
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