PISTON KIT 77.00mm 2005-2013 YAMAHA YZF 250 NAMURA FORGED FX-40033
Forged aluminum piston kit, 77.00 mm standard bore. Features a hard-anodised crown for improved heat resistance and reduced carbon build-up, and a MOS2 low-friction skirt coating for reduced friction and aided running-in. The 100% CNC-machined dome ensures a consistent combustion shape. Supplied complete for one cylinder, including piston, ring set, wrist pin, and circlips. Specifications include a 13.5:1 compression ratio and 4-stroke single, DOHC, 5-valve engine type. Typical engine stroke is 53.6 mm. Manufacturer part number FX-40033.
- SKU
- 56-W9702.A.NF
- Brand
- Namura Technologies
- Availability
- In Stock (9)
FULL DESCRIPTION
Namura Forged Piston Kit - 77.00mm Bore
This Namura forged piston kit is engineered for high-performance replacements and routine engine rebuilds. Designed for a precise fit, it ensures optimal combustion and durability under demanding conditions.
Key Features
- Forged Aluminum Construction: Provides exceptional strength and resistance to thermal load for enhanced longevity.
- Hard-Anodised Crown: Improves heat resistance and minimizes carbon deposit formation, maintaining peak performance.
- MOS2 Skirt Coating: Molybdenum disulfide coating reduces friction, aids in the running-in process, and promotes smoother operation.
- 100% CNC Machined Dome: Ensures a consistent and accurate combustion chamber shape for optimized power delivery.
- Complete Kit: Supplied with all necessary components for a single cylinder, including the piston, ring set, wrist pin, and circlips.
Specifications
- Bore Size: 77.00 mm (Standard)
- Compression Ratio: 13.5:1
- Engine Type: 4-stroke single, DOHC, 5-valve
- Kit Contents: Piston, rings, wrist pin, circlips for one cylinder


