PISTON KIT 16-18 YZ 250F 77.00 A HIGH COMP., WOSSNER 8946DA, 1SM-11631-10-00
SKU
56-W4966.A.WO.HC
Retail Price
£215.60
£179.67
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2 In stock
Pistons & Kits for off-road applications. Alt/OEM: 1SM-11631-10-00. SKU: 56-W4966.A.WO.HC.
PRODUCT INFORMATION
| Weight | 0.224 kg |
|---|---|
| Brand | Wossner |
| Size | 77mm |
| Product Type | Pistons & Kits |
| Product Group | Engine |
| Alternate SKU's | 1SM-11631-10-00 |
| Piston Diameter | 77.00 |
VEHICLE FITMENT
DESCRIPTION
Wossner high-compression forged pistons are built for durability and thermal efficiency, designed to facilitate effective heat transfer and uniform expansion under pressure. The elliptical structure reduces localized stress, preventing piston collapse. This high-compression piston kit features a 77.00mm bore (76.95mm actual size) and a 14.4:1 compression ratio, made for Yamaha YZ 250 F models from 2016 to 2018.
Features
- Forged for enhanced strength
- Elliptical design for uniform thermal expansion
- High-compression specification
- Made in Germany
Specifications
- Bore Size: 77.00mm (actual 76.95mm)
- Compression Ratio: 14.4:1
Cross-Reference OEM Part Numbers
- 1SM-11631-10-00
Vehicle Fitments
- Yamaha YZ 250 F 2016–2018

