PISTON KIT 98-99 YZF400 92.00, FORGED WOSSNER 8603DA, 5GR-11631-00-00
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Delivery to United States 5–8 business days
Wossner 92mm Bore Piston Kit 8603DA. This high-strength forged piston features an elliptical design for even thrust load distribution and optimized heat transfer. Manufactured in Germany, it maintains the OEM compression ratio of 11.0:1 for reliable performance. Specifications include an actual bore diameter of 91.95mm, displacement of 290cc, stroke of 61.20mm, clearance of 0.06mm, dome volume of -4.80cm³, and compression height of 23.00mm. Cross-reference OEM part numbers include lock P/N CW18, pin P/N WP053, ring set P/N 920XSY, and OEM part number 5GR-11631-00-00.
- SKU
- 56-W4649.A.WO
- Brand
- Wossner
- Availability
- Out of Stock
Fitments (13)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 400F | 1998 |
| YAMAHA | WR 400F | 1999 |
| YAMAHA | WR 400F | 2000 |
| YAMAHA | WRF 400 | 1998 |
| YAMAHA | WRF 400 | 1999 |
| YAMAHA | WRF 400 | 2000 |
| YAMAHA | YZ 400F | 1998 |
| YAMAHA | YZ 400F | 1999 |
| YAMAHA | YZF 400 | 1998 |
| YAMAHA | YZF 400 | 1999 |
| YAMAHA | YZF 400 | 2000 |
| YAMAHA | YZF 450 | 1998 |
| YAMAHA | YZF 450 | 1999 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 92mm
- Variant Id
- 255808
FULL DESCRIPTION
Wossner Forged Piston Kit 92mm Bore for Yamaha YZF400 WRF400
Enhance your Yamaha YZ400F or WR400F engine with this high-performance Wossner forged piston kit. Engineered for superior strength and durability, this piston kit is designed to optimize engine performance and longevity.
Key Features:
- High-Strength Forged Construction: Built from premium forged materials for exceptional durability and resistance to high temperatures and pressures.
- Optimized Heat Transfer: Designed to improve heat transfer within the combustion chamber, contributing to more efficient combustion.
- Elliptical Piston Design: Features an elliptical profile to ensure uniform load distribution across the piston surface, reducing localized pressure and preventing premature wear or collapse.
- German Engineering: Manufactured in Germany, ensuring high standards of quality and precision.
- OEM Compression Ratio: Maintains the original equipment manufacturer's compression ratio for reliable and predictable engine operation.
Specifications:
- Bore Size: 92.00mm
- Actual Bore Diameter: 91.95mm
- Compression Ratio: OEM
- OEM Compression Ratio: 11.0:1
- Displacement: 290cc
- Stroke: 61.20mm
- Clearance: 0.06mm
- Dome Volume: -4.80cm³
- Compression Height: 23.00mm
Included Components:
- Lock P/N: CW18
- Pin P/N: WP053
- Ring Set P/N: 920XSY
Cross-Reference OEM Part Number: 5GR-11631-00-00
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