PISTON KIT-4 SUZUKI GSXR1000 K9-K10 WOSSNER K8790DA-4
Forged piston kit set of four with a standard 74.50 mm bore (measured piston diameter 74.46 mm), engineered for high-performance road and race use. Designed to withstand extreme thermal and mechanical loads, with an elliptical profile for consistent bearing surfaces and balanced thrust load distribution. Must be used with the OEM ring set. Features include forged construction for maximum strength and durability, optimised heat transfer from combustion chamber to cylinder walls, an elliptical profile for consistent bearing surface under heat expansion, and even thrust load distribution to help prevent piston collapse. Manufactured in Germany. Supplied as a set of four pistons. Specifications: Bore 74.50 mm, measured diameter 74.46 mm, engine displacement (reference) 999 / 1052 cm³, stroke 57.30 mm, clearance 0.04 mm, compression ratio (Wössner) 14.00:1, compression ratio (OEM reference) 12.80:1, dome volume -4.40 cm³, compression height 22.35 mm. Quantity in kit: 4 pistons. Cross-reference OEM Part Numbers include 56-W9933.000.WO and Wössner K8790DA-4. Clips CW15, piston pin WP011.
- SKU
- 56-W9933.000.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner Forged Piston Kit for High-Performance Motorcycles
Upgrade your motorcycle's engine with this high-performance forged piston kit from Wossner. Engineered for demanding road and race applications, these pistons are designed to deliver maximum strength and durability under extreme thermal and mechanical stress. The advanced elliptical profile ensures consistent bearing surfaces and balanced thrust load distribution, contributing to overall engine longevity and performance.
Key Features:
- Forged construction for superior strength and endurance.
- Optimized design for efficient heat transfer from the combustion chamber to the cylinder walls.
- Elliptical piston profile maintains consistent bearing surfaces as the piston expands under heat.
- Promotes even thrust load distribution to prevent piston collapse.
- Manufactured with precision in Germany.
- Supplied as a complete set of four pistons.
- Important: This kit must be used with the original equipment (OEM) ring set.
Technical Specifications:
- Standard Bore: 74.50 mm
- Measured Piston Diameter: 74.46 mm
- Stroke: 57.30 mm
- Piston to Cylinder Clearance: 0.04 mm
- Wossner Compression Ratio: 14.00:1
- OEM Reference Compression Ratio: 12.80:1
- Dome Volume: -4.40 cm³
- Compression Height: 22.35 mm
- Kit Quantity: 4 pistons
