PISTON KIT 05-08 KX250 66.40 B, NAMURA NX-20029-B
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Namura Piston Kit 66.40mm Bore NX-20029-B. Features high-silicon content Hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life, and reduced scuffing. Machined, smooth piston crowns reduce carbon buildup, increase horsepower, and improve fuel economy. Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures. MOS2 (Teflon/Molybdenum) coated skirts reduce friction and heat. Utilizes state-of-the-art CNC equipment and a low-expansion, low-friction piston alloy. Uses an OEM-style tin coating to assist break-in. Fractional oversize pistons are available for some applications to extend cylinder life. Piston assemblies include ring(s), wrist pin, and circlips. Weight is 342 grams.
- SKU
- 56-W844.B.NT
- Brand
- Namura Technologies
- Availability
- In Stock (3)
Fitments (62)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 250 | 1993 |
| KAWASAKI | KX 250 | 1994 |
| KAWASAKI | KX 250 | 1995 |
| KAWASAKI | KX 250 | 1996 |
| KAWASAKI | KX 250 | 1997 |
| KAWASAKI | KX 250 | 1998 |
| KAWASAKI | KX 250 | 1999 |
| KAWASAKI | KX 250 | 2000 |
| KAWASAKI | KX 250 | 2001 |
| KAWASAKI | KX 250 | 2002 |
| KAWASAKI | KX 250 | 2003 |
| KAWASAKI | KX 250 | 2004 |
| KAWASAKI | KX 250 | 2005 |
| KAWASAKI | KX 250 | 2006 |
| KAWASAKI | KX 250 | 2007 |
| KAWASAKI | KX 250 | 2008 |
| KAWASAKI | KX 250 | 2009 |
| KTM | 250 SX | 2003 |
| KTM | 250 SX | 2004 |
| KTM | 250 SX | 2005 |
| KTM | 250 SX | 2006 |
| KTM | 250 SX | 2007 |
| KTM | 250 SX | 2008 |
| KTM | 250 SX | 2009 |
| KTM | 250 SX | 2010 |
| KTM | 250 SX | 2011 |
| KTM | 250 SX | 2012 |
| KTM | 250 SX | 2013 |
| KTM | 250 SX | 2014 |
| KTM | 250 SX | 2015 |
| KTM | 250 SX | 2016 |
| SUZUKI | RM 250 | 2003 |
| SUZUKI | RM 250 | 2004 |
| SUZUKI | RM 250 | 2005 |
| SUZUKI | RM 250 | 2006 |
| SUZUKI | RM 250 | 2007 |
| SUZUKI | RM 250 | 2008 |
| SUZUKI | RM 250 | 2009 |
| SUZUKI | RM 250 | 2010 |
| YAMAHA | YZ 250 | 1999 |
| YAMAHA | YZ 250 | 2000 |
| YAMAHA | YZ 250 | 2001 |
| YAMAHA | YZ 250 | 2002 |
| YAMAHA | YZ 250 | 2003 |
| YAMAHA | YZ 250 | 2004 |
| YAMAHA | YZ 250 | 2005 |
| YAMAHA | YZ 250 | 2006 |
| YAMAHA | YZ 250 | 2007 |
| YAMAHA | YZ 250 | 2008 |
| YAMAHA | YZ 250 | 2009 |
| YAMAHA | YZ 250 | 2010 |
| YAMAHA | YZ 250 | 2011 |
| YAMAHA | YZ 250 | 2012 |
| YAMAHA | YZ 250 | 2013 |
| YAMAHA | YZ 250 | 2014 |
| YAMAHA | YZ 250 | 2015 |
| YAMAHA | YZ 250 | 2016 |
| YAMAHA | YZ 250 | 2017 |
| YAMAHA | YZ 250 | 2018 |
| YAMAHA | YZ 250 | 2019 |
| YAMAHA | YZ 250 | 2020 |
| YAMAHA | YZ 250 | 2021 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 66.40mm
- Variant Id
- 257999
FULL DESCRIPTION
Namura Piston Kit - 66.40mm Bore
Upgrade your engine with the high-performance Namura Piston Kit, engineered in the USA and manufactured in Taiwan. This piston assembly is designed for optimal performance and longevity.
- Material: High-silicon content Hypereutectic cast aluminum alloy for reduced heat expansion, tighter clearances, increased hardness, longer life, and reduced scuffing.
- Piston Crown: Machined for reduced carbon buildup, increased horsepower, and improved fuel economy.
- Hard Anodized Crowns: 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures.
- Piston Skirt Coating: MOS2 (Teflon/Molybdenum) coated skirts reduce friction and heat for peak performance.
- Manufacturing: Utilizes state-of-the-art CNC equipment.
- OEM Style Tin Coating: Assists in the break-in process.
- Oversize Options: Available in fractional oversize pistons (.0004 in. and.0008 in.) to extend cylinder life by renewing original clearances.
- Included Components: Piston assembly includes piston rings, wrist pin, and circlips.
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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
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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