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Description
440cc 89mm Big Bore Jug Cylinder for Honda TRX400EX TRX400X Top End Rebuild KitReplacement Part Number: Cylinder: 12100 HN1 A70, 12100 KCY 670Cylinder Base Gasket: 12191 KCY 672Cylinder Head Gasket: 12251 HN1 003Cylinder Head Valve Cover: 12391 KCY 671Tensioner Gasket: 14560 KCW 851Piston: 13101 KCY 670Pin, piston: 13111 KCY 670Ring Set, piston: 13011 KCY 670Circlips, piston: 90601 KA5 000Fitments: Honda TRX400EX Sportrax 400 2x4 1999 2008 Honda TRX400X 2x4 2009 2014 Honda XR400R 1996 2004Features: Kit includes piston, rings,
Replacement Part Number:
Cylinder: 12100-HN1-A70, 12100-KCY-670
Cylinder Base Gasket: 12191-KCY-672
Cylinder Head Gasket: 12251-HN1-003
Cylinder Head Valve Cover: 12391-KCY-671
Tensioner Gasket: 14560-KCW-851
Piston: 13101-KCY-670
Pin, piston:13111-KCY-670
Ring Set, piston: 13011-KCY-670
Circlips, piston: 90601-KA5-000
Fitments:
Honda TRX400EX Sportrax 400 2x4 1999-2008
Honda TRX400X 2x4 2009-2014
Honda XR400R 1996-2004
Features:
Kit includes piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Cast piston has super-high silicone content for additional strength.
Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life.
Piston dome is anodized for superior heat resistance and longer lifespan.
The gaskets use performance materials to increase durability and provide greater reliability.
Includes all gaskets pictured to rebuild top end.
Kit is for big bore size - 89.00 mm.
All of the components within this kit are bolt-on ready for a hassle free installation.
Specifics:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Piston Material: Forged Aluminum
Actual Displacement: 440cc
Bore Type: Big Bore
Bore Size: 89.00mm
Stroke: 70.00 mm
Package Includes:
1x Cylinder
1x Piston(Big Bore)
1x Piston Ring Set
1x Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Cylinder Head Gasket
1x Chain Tensioner Gasket
1x Cylinder Head Valve Cover
Note:
Ring end gaps are checked prior to shipment for proper sizing.
Please check out the product and size fits your motorcycle or not before you purchase.
Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 959 reviews
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Product Reviews
★★★★★ 5
SUN-sational Sunscreen
Style: SPF 70, Size: 2.5 Fl Oz (Pack of 1)
This sunscreen has become a staple in my daily routine! The Neutrogena Sport Face SPF 70+ goes on smoothly without feeling greasy or heavy, and it doesn’t leave a white cast on my skin. It stays put even when I’m sweating or in the water, which is perfect for workouts and outdoor days. My face feels protected all day, and it hasn’t irritated my skin at all. Definitely worth the price for reliable, strong sun protection!
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Protection is top notch.
Style: SPF 70, Size: 2.5 Fl Oz (Pack of 1)
Can't go wrong with this sunscreen. I found it easy to rub in with no greasy feeling afterwards.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 5
🚨 Listen up Black and brown-skinned girls, this is for US! APPLICATION is the key!
Size: 1.7 Fl Oz (Pack of 1), Style: SPF 50 Liquid Drops
As the line goes from Love Jones, "Let me break it down, so it can forever and consistently be broke."
It bugs me when a great product gets mediocre reviews when the problem isn't the product, it's the application. I saw another review by a brown woman like me where her face is ghostly white and she claims this isn't for us. The review is still up for you to go find yourself. I almost didn't purchase because of that review but I'm glad I decided to see for myself.
First, physical sunscreens, like this one, are more effective than the chemical ones. Additionally, I am 57 years old and have tried a LOT of chemical facial sunscreen products over the years and even my favorites like the Neutrogena SPF Serum 60 makes my eyes tear. Even if I avoid placing near my eyes, once I'm out and about if the wind blows wrong or I have a little hot flash sweat, my eyes are tearing for the remainder of the day until I get home and relieve myself by washing my face. So there's the backstory.
This sunscreen right here is so good that I did something I almost never do. I recorded a review video without being all "done up". I had to do it on the spot because I'm that impressed. The problems people are having with the severe white cast is because they're applying way too much and rubbing instead of tapping it in. That's the key takeaway from this review.
First, your skin has to be moisturized. I drink approximately 80 ounces of water MINIMUM a day, but my skincare regimen is heavy on the moisture. So in the morning, for instance, I use Hanskin Bubble Pop skin cleanser, the the Hanskin essence, and I also use 2 actives, alpha arbutin and niacinamide. I finish up with Visible Difference Replenishing HydraGel Complex. So by the time I get to the sunscreen step, my face is dewy and ready.
Then, I SHAKE THE SUNSCREEN BOTTLE AGGRESSIVELY for like 15 seconds. There's a little ball inside the bottle to mix it well and the product is thin like nail polish so it needs to be mixed every time you apply.
I drop LITERALLY 3 DROPS OF THE SUNSCREEN DROPS ON THE BACK OF MY HAND. Then I tap just a little bit (see videos) onto a fingertip and begin TAPPING the product onto my face, one area at a time. I admit, yes, it takes a little time, but so? I'm about the long-term health of my skin, which means spending a little extra time when I have to. I'd say to apply it to my entire face takes all of 5 to 7 minutes which is the only step in my morning skincare regimen that takes time. That's not a big deal. When I'm done, there is the very sliiiiightest white cast but it is absolutely minimal. It's not even a bother.
I admit I wouldn't feel confident leaving home with just this sunscreen and no makeup. Brown ladies know what I mean. Even if it's the slightest white cast, you see it in the harsh light of day and office lighting. It's just what it is, titanium and zinc do that to us and there's no perfect way around it if you want the benefits of physical sunscreen.
But here's the thng. I don't wear liquid foundation and most days I just use the Fenty Pro Filt'r Instant Retouch concealer(shade 385) under my eyes and to cover the blemishes on my cheeks. This sunscreen plays nicely with my concealer. But for the video I took for this review, I skipped concealer altogether just so you could see me spots and all.
What I DO have on is just the slightest-teensy dusting of Fenty Pro Filt'r Powder Foundation (shade 385) and that's all I need to conceal any white casting to show you how I'm street-ready with a full face of sunscreen on underneath. That's it. Nothing else needed. I don't look like a ghost and I'm standing right in front of floor to ceiling windows with natural light. No filters, no AI.
Do not try to save time by dropping it directly onto your face and then rubbing it in. It will never work, no matter your skin tone. If you have patience and take a few extra minutes to apply it properly, you can feel confident using this high quality, reasonably priced physical sunscreen.
Lastly, I double cleanse at night with Hanskin PHA oil cleanser first to remove every trace of sunscreen from my face. This stuff is waterproof and if you don't believe me, put a drop on the back of your hand and then hold it under fully running water. It does not move, which is great for warmer weather and girls like me who have hot flashes. I'm not mad about it. I just feel better loosening it up with an oil cleanser before washing it away with my Hanskin Bubble Pop (or whatever other cleanser I'm using for the evening which is sometimes the Hanskin Vitamin C Glow Powder).
My skin has not been irritated, I've seen no additional breakouts and bonus, my actives are working better. It's like night and day from just using the chemical sunscreen I've used for years. No teary eyes, very comfortable to wear and no scent.
If you use it as I've described here, this bottle will last you a minimum of 6 months, likely more. If you're using more than 7 drops for your entire face, you're using too much.
Whew! I've given you all I've got. Now, go forth and be beautiful. Prevention beats correction every time.
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Reviewed in the United States on December 6, 2025
★★★★★ 5
Gentle and Reliable for Accutane Skin, Just Not Matte
Size: 1.7 Fl Oz (Pack of 1), Style: SPF 50 Liquid Drops
For the past few weeks, I've been using Cetaphil Sheer Mineral Liquid Sunscreen SPF 50 on my skin while I've been using Accutane and have been putting on this product every morning before I go outside. With Accutane, my skin is very dry and super sensitive but this product doesn't sting or irritate my skin at all. It's nice and gentle on my skin, and I've been getting a good consistent amount of protection from it since my skin burns very easily right now.
The consistency of this sunscreen is very light, almost like lotion, and it goes on easily without tugging on dry skin. The initial application has a little bit of a white cast, but after about one minute, it completely absorbs into the skin. The finish provides a nice soft, hydrated look as opposed to a matte finish. This product does really well with the dryness since most of the products I use tend to make my skin appear more oily.
For daily use, I feel like I have to purchase this product fairly frequently because the bottle runs out rather fast (especially if you apply a good amount). I would recommend this product as a non-irritating option for anyone who is currently on Accutane or has sensitive skin. You can expect this product to have a bit of a dewy finish so you may need to apply again throughout the day if necessary.
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Reviewed in the United States on April 10, 2026
★★★★★ 4
Mineral SPF with very little cast, dewy finish
Size: 1.7 Fl Oz (Pack of 1), Style: SPF 50 Liquid Drops
This is another mineral sunscreen I’ve been trying, and compared to others, it definitely leaves less of a white cast. The formula feels more fluid and lightweight, almost similar to some Japanese-style sunscreens that have a thinner, shake-and-pour consistency. It spreads easily and blends faster than thicker mineral creams.
On my skin, it looks more sheer overall and doesn’t cling heavily to texture. That said, it does leave a slightly greasy or dewy finish that can feel a bit much, especially if you already have combination or oily skin. I personally need a light powder on top if I don’t want to look shiny!
It offers broad-spectrum SPF 50 protection and feels gentle enough for sensitive skin. I haven’t experienced stinging around the eyes, and it layers reasonably well over moisturizer. Because it’s more liquid, I recommend applying in thin layers and allowing it a moment to settle before makeup.
Overall, it’s a solid mineral sunscreen with a more elegant texture and less cast, just be aware of the dewy finish.
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Reviewed in the United States on February 24, 2026