PISTON KIT 15-16 KX250F 77 B, 8921DB WOSSNER KAWASAKI, KXF250
Wossner forged piston kit with a 77.01mm bore. Features forged construction for increased strength and reliability, optimized heat transfer for efficient combustion, and an elliptical design for uniform bearing surface and even thrust load distribution. Manufactured in Germany. Specifications include a 77.01mm bore size, 0.05mm clearance, OEM compression ratio of 13.80:1, -2.43 cm³ dome volume, 19.80mm compression height, 53.60mm stroke, 249 cm³ displacement, and a theoretical weight of 139.00g. Wossner Part No: 8921DB. Lock Part No: CW16. Pin Part No: WP087. Ring Set Part No: 770XAS-2.
- SKU
- 56-W331.B.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner Forged Piston Kit - 77.01mm Bore
Upgrade your motorcycle's performance and durability with this Wossner forged piston kit. Engineered for precision and strength, this piston kit is designed to enhance combustion efficiency and withstand high operating temperatures. The advanced elliptical design ensures even distribution of bearing surface pressure, preventing localized stress and piston distortion even under extreme heat. Manufactured with exceptional quality standards in Germany, Wossner pistons are trusted by performance enthusiasts worldwide.
Key Features:
- Forged Construction: Provides superior strength and reliability compared to cast pistons, essential for high-performance applications.
- Optimized Heat Transfer: Promotes efficient combustion and helps manage engine temperatures.
- Elliptical Design: Ensures uniform bearing surface expansion and even thrust load distribution, reducing wear and preventing collapse under heat.
- German Engineering: Manufactured in Germany, guaranteeing high quality and performance.
Specifications:
- Bore Size: 77.01mm
- Clearance: 0.05mm
- Compression Ratio (Wossner): OEM
- OEM Compression Ratio: 13.80:1
- Dome Volume: -2.43 cm³
- Compression Height: 19.80mm
- Stroke: 53.60mm
- Displacement: 249 cm³
- Theoretical Weight: 139.00g
Included Components:
- Piston
- Lock Ring Part Number: CW16
- Pin Part Number: WP087
- Ring Set Part Number: 770XAS-2


