Namura Piston Kit 77.97mm Kawasaki KX250F '21-'24 / KX250X '21-'24
SKU: 46230560705

Namura Piston Kit 77.97mm Kawasaki KX250F '21-'24 / KX250X '21-'24

Sale price$139.50 Regular price$155.00
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

Namura Piston Kit 77.97mm Kawasaki KX250F '21-'24 / KX250X '21-'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: 46230560705

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Chris Cook
Louisville, US
★★★★★ 1
You get what you pay for
Color: 6692:Silver strap&blue dial
I thought I'd give this a try but when I took it out of the box, it was the cheapest built watch I ever bought. You get what you pay for. It was supper light so I don't believe it was stainless wrist band. Felt more like potted metal. Never again.
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Reviewed in the United States on January 19, 2025
B
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byron j wilkinson
Birmingham, US
★★★★★ 5
Good basic watch
Smaller than I expected but super nice we'll built. Offers day in English and Spanish. Stylish but simple. Easy to read the time and date.
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Reviewed in the United States on February 8, 2026
D
Verified Purchase
DX Victor
Carnegie, US
★★★★★ 5
Classy, comfortable, accurate
My previous Casio has gotten pretty beat up. So I wanted another Casio without spending a lot. I also need it do have both day and date. A metal band is a must. I sweat a lot and leather doesn’t last. The band needs to adjust perfectly to my relatively thin wrist. First, I like the style of the face - simple and easy to read. The watch isn’t real fancy which is fine with me. The band took a bit of adjusting and came out perfectly. It’s not too heavy and retains good accuracy. Can’t beat the price. Only thing I wish it had was 24 hour sub-dial instead of elapsed minutes. I think it’s a great value and a nice looking everyday watch.
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Reviewed in the United States on April 17, 2023
L
Verified Purchase
Lazarus 43
Omaha, US
★★★★★ 4
Very nice watch but hands need to be larger and luminous
It’s a very nice looking watch. Band adjustment is not difficult using the tools that come with th watch- and it’s very attractive. The watch could stand to be improved by by making the Hands larger and by making them luminous. The watch is very comfortable to wear . It may be a little large for a small wrist but it’s not gigantic. I haven’t checked the accuracy but it appears that the watch doesn’t lose or gain time.
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Reviewed in the United States on November 20, 2025
A
Verified Purchase
Avery Waggoner
Alexandria, US
★★★★★ 5
Literally just a good watch, absolutely nothing to complain about
Ive had two versions of this watch, the leather strap version and this metal version. The only weak point on my old watch was the leather strap. This thing is simple, elegant, and practical, couldn't really ask more from a watch. It holds up pretty well and doesn't scratch too easily (if you have a labor intensive job you might want a glass protector). I've had mine for a couple months now and it only has a few very faint scratches but that's just because im rough on my watches lol. I would recommend this to literally anybody
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Reviewed in the United States on January 20, 2026

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