SKU: 21744901272

Namura Piston Kit 77.96mm KTM 250SXF '16-'21 / 250XCF '16-'22

Sale price$155.25 Regular price$172.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Namura Piston Kit 77.96mm KTM 250SXF '16-'21 / 250XCF '16-'22Namura 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: 21744901272

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4.4 ★★★★★
Based on 19 reviews
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H
Verified Purchase
Haley Angilella
Dallas, US
★★★★★ 4
Very stylish but not the best quality
Color: Silvery Gold green dial, Color: Silvery Gold green dial
You are getting what you pay for: the color of the dial is amazing. It looks so stylish and can really accessorize an outfit. The packaging of the watch was very nice and it came with tools to adjust the size of the watch. However the links color is not the best color and quality. The watch feels light but in a cheaper feel. I’ve ordered other watches from Amazon that in my opinion were nicer and felt and looked high end. I got this watch on sale for Black Friday but I’m not sure if I would pay full price for it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
H
Verified Purchase
Herbert M.
Belleville, US
★★★★★ 5
Bracelet opens too easy for any time activity
Color: Silvery green dial 5885
Watch face too small more for women tastes
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
M
Verified Purchase
Mike Smith
Natrona Heights, US
★★★★★ 1
Cheap watch
Color: 5885 steel black dial
Beautiful watch but don't get it wet....can't take a shower with it. Do not waste your money save up and get a good watch.
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Reviewed in the United States on May 20, 2026
R
Verified Purchase
R. Nicholas Martin
San Leandro, US
★★★★★ 5
Best watch for the retail price!
Color: 5885 blue dial
Ease of use: All you have to do is put it on and it's self-winding and you never ever need to worry about batteries or winding it up! It's pretty accurate time as well and looks good! It's the best watch I've ever owned for this price and I even bought my son one for himself!
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Reviewed in the United States on July 4, 2025
R
Verified Purchase
Reese Wright
New York, US
★★★★★ 5
Real stainless band
Color: rose steel black dial, Color: rose steel black dial
My new favorite work watch. Wound up buying this after two failed attempts with other cheap watches from Wally world that turned my wrist black after the plating wore off in about three days. Learned my lesson. so far this thing keeps perfect time and does not turn my wrist black. Had to take a couple of links out for a perfect fit. So yeah, this will be the only brand of watch I will likely be buying from now on. Hope they’re around for a while. Update* January 8 2026. Oh no, I had such high hopes for this watch brand BUT, I only had this watch for two months when it started dry moisture inside the crystal. No I am not a diver nor have I had the watch fully submerged. This thing is not water resistant at all. It may be great for Desert dwellers or for people who never take showers or baths with it on. Going back to my old favorite Armitron.
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Reviewed in the United States on October 28, 2025

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