PISTON KIT 77.00mm 2005-2013 YAMAHA YZF 250 NAMURA FORGED FX-40033
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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)
Fitments (47)
| Make | Model | Year |
|---|---|---|
| GAS-GAS | EC F 250 | 2010 |
| GAS-GAS | EC F 250 | 2011 |
| GAS-GAS | EC F 250 | 2012 |
| GAS-GAS | EC F 250 | 2013 |
| GAS-GAS | EC F 250 | 2014 |
| GAS-GAS | EC F 250 | 2015 |
| YAMAHA | WR 250F | 2005 |
| YAMAHA | WR 250F | 2006 |
| YAMAHA | WR 250F | 2007 |
| YAMAHA | WR 250F | 2008 |
| YAMAHA | WR 250F | 2009 |
| YAMAHA | WR 250F | 2010 |
| YAMAHA | WR 250F | 2011 |
| YAMAHA | WR 250F | 2012 |
| YAMAHA | WR 250F | 2013 |
| YAMAHA | WRF 250 | 2005 |
| YAMAHA | WRF 250 | 2006 |
| YAMAHA | WRF 250 | 2007 |
| YAMAHA | WRF 250 | 2008 |
| YAMAHA | WRF 250 | 2009 |
| YAMAHA | WRF 250 | 2010 |
| YAMAHA | WRF 250 | 2011 |
| YAMAHA | WRF 250 | 2012 |
| YAMAHA | WRF 250 | 2013 |
| YAMAHA | YZ 250F | 2005 |
| YAMAHA | YZ 250F | 2006 |
| YAMAHA | YZ 250F | 2007 |
| YAMAHA | YZ 250F | 2008 |
| YAMAHA | YZ 250F | 2009 |
| YAMAHA | YZ 250F | 2010 |
| YAMAHA | YZ 250F | 2011 |
| YAMAHA | YZ 250F | 2012 |
| YAMAHA | YZ 250F | 2013 |
| YAMAHA | YZ 250F | 2014 |
| YAMAHA | YZ 250F | 2015 |
| YAMAHA | YZ 250F | 2016 |
| YAMAHA | YZ 250F | 2017 |
| YAMAHA | YZ 250F | 2018 |
| YAMAHA | YZF 250 | 2005 |
| YAMAHA | YZF 250 | 2006 |
| YAMAHA | YZF 250 | 2007 |
| YAMAHA | YZF 250 | 2008 |
| YAMAHA | YZF 250 | 2009 |
| YAMAHA | YZF 250 | 2010 |
| YAMAHA | YZF 250 | 2011 |
| YAMAHA | YZF 250 | 2012 |
| YAMAHA | YZF 250 | 2013 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77.00mm
- Variant Id
- 258488
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
QUESTIONS? JUST ASK
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
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