SKU: 12899209574

Namura Piston Kit 43.44mm Single Ring – Yamaha YZ65 '18–'24

Sale price$77.39 Regular price$85.99
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

Namura Piston Kit 43.44mm Single Ring – Yamaha YZ65 '18–'24Namura provides high quality piston options to suit a wide range of applications, including direct OEM replacements, high compression variants, and multiple oversizes. B (0. 01 mm) and C (0. 02 mm) oversizes are also available, helping to extend the service life of expensive plated cylinders. Select applications are supported with big bore piston kits. With the addition of MOS2 coating and hard anodising, Namura delivers improved performance and

Namura provides high-quality piston options to suit a wide range of applications, including direct OEM replacements, high-compression variants, and multiple oversizes. B (0.01 mm) and C (0.02 mm) oversizes are also available, helping to extend the service life of expensive plated cylinders. Select applications are supported with big-bore piston kits. With the addition of MOS2 coating and hard anodising, Namura delivers improved performance and durability, without the premium price.

Features:

  • MOS2 (Teflon/Molybdenum) Coated Skirts: Applied using a rolled-on process for a bond up to 10 times stronger than typical spray coatings. Improves heat transfer, reduces friction, and helps prevent cold seizures.
  • Machined Smooth Heads: Reflect combustion heat and minimise carbon build-up, protecting the piston crown. Testing indicates potential gains of up to 6% in horsepower and fuel efficiency.
  • Anodised Domes: Enhance heat resistance and durability, with up to 75% greater strength compared to non-anodised pistons.
  • Hypereutectic Casting Process: Increases silicon content to reduce expansion, improve wear resistance, and withstand higher cylinder temperatures.
  • 0.50 mm oversize up to 100.47 mm, with a 9.2:1 standard compression ratio.
  • Includes piston (individually wrapped), OEM-quality rings (boxed separately), wrist pin, and circlips.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12899209574

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jirarmel
Charlottesville, US
★★★★★ 5
True to size and very comfortable
Size: 13, Color: Black/Dark Smoke Grey
These are lightweight, running shoes
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Reviewed in the United States on April 7, 2026
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Aaron
Carnegie, US
★★★★★ 5
good shoes
Size: 8, Color: Black/White/Iron Grey
better than what i estimated. it took a day for θem 2 sink in, letting me feel full eφect.
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Reviewed in the United States on May 7, 2026
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personas de 40 aÑos en adelante
Fort Morgan, US
★★★★★ 4
son comodos
Size: 9, Color: Black/White/Iron Grey
muy satisfecha con esta compra,
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Reviewed in the United States on April 29, 2026
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Timothy B.
Fort Morgan, US
★★★★★ 5
A great everyday companion.
Overall this is a great watch for the price. Swiss Made and the right size for a larger dial vs. others in the class. The dial color is more gray than black which was a plus for me as I was looking for a gray dial. I switched out the band for a black field band bought on Hamilton’s website. I am very happy with the results!
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Reviewed in the United States on November 14, 2025
J
Verified Purchase
Jonathan Lee
Draper, US
★★★★★ 5
The Perfect Everyday Watch
This hands down is the best everyday watch. I have a large wrist so the 42mm works perfectly for me. The all brushed titanium looks great. The subdued look and clear dial just only make it better. I didnt want to believe the Hamilton hype but I have to say that Hamilton makes a great solid watch. If you are looking for the everyday watch that just feels right, is solid, and works, look no further. I am sure the standard version is just as good also. ALSO, the dial is not black black. It is slightly a grayish tone. At first I hated this detail but after looking at it, it just looks so good.
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Reviewed in the United States on October 12, 2020

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