SKU: 12975011183

1986-2007 Honda CN250 Helix Scooter Cylinder Barrel Piston Gaskets Top End Kit 12100-KS4-690

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Description

1986-2007 Honda CN250 Helix Scooter Cylinder Barrel Piston Gaskets Top End Kit 12100-KS4-690Cylinder Piston Gasket Top End Rebuild Kit 72mm For Honda Helix CN250 CH250 1986 2007 Features: If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you. Kit includes cylinder, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). The cylinder is made of aluminum for good cooling with an internal cast iron jacket (unlike which has a

Cylinder Piston Gasket Top End Rebuild Kit 72mm For Honda Helix CN250 CH250 1986 - 2007

Features:
If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you.
Kit includes cylinder, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
The cylinder is made of aluminum for good cooling with an internal cast iron jacket (unlike which has a nicasil treatment).
The gaskets use performance materials to increase durability and provide greater reliability.
Includes all gaskets pictured to rebuild top end.
Kit is for standard bore size - 72 mm, 17 mm steel piston pin.
This kit is excellent as a low-cost replacement for defects in the original cylinder.

Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Material: Aluminum, Steel
Engine: 4 stroke
Displacement: 244cc
Bore Type: Standard Bore
Bore diameter: 72 mm
Pin diameter: 17 mm
Pin length: 57 mm

Replacement Part Number:
Cylinder: 12100-KS4-690, 12100-KS4-691
Cylinder Base Gasket: 12191-KM1-013, 12191-KS4-690
Cylinder Head Gasket: 12251-KS4-691
Piston: 13101-KS4-030
Pin, Piston: 13111-KM1-000
Piston Ring Set (Std): 13011-KS4-315, 13011-KFR-700
Circlips, piston (2): 94601-17000
Chain Tensioner Gasket: 14555-KS4-690, 14555-KM1-010

(Always compare part numbers to your parts schematics and cross reference appropriately.)
(This is NOT a genuine Part, OEM part numbers are included for product type identification and comparison only.)

Fits Make/Model/Year:
Fit for Honda CN250 Helix Scooter 1986 - 2007
Fit for Honda CH250 Elite Scooter 1985 - 1990

(Compatibility Chart is for Reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)

Package Includes:
1x 72mm Cylinder
1x Piston
1x Piston Ring Set
1x 17mm Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Cylinder Head Gasket
1x Chain Tensioner Gasket
2x Valve Stem Seals

(Comes exactly as pictured.)

Note:
Please check your existing cylinder prior to purchase to ensure that you are ordering the correct type for your machine.
Key things to check are the distances between the, Fixing holes (measured centre of eye to centre of eye) and the internal diameter of the cylinder/barrel.
The product on offer is an accessory or spare part and thus is not an original product of the vehicle manufacturer.
The name of the vehicle manufacturer is stated only as an indication of the determination of the product being offered as an accessory or spare part, to clarify, for which vehicle the product on offer Fits.

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:
  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: 12975011183

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A Davis
Houston, US
★★★★★ 5
Dry Mouth...BE GONE!!
Flavor Name: Slightly Sweet, Size: 100 Count (Pack of 1)
These are a fabulous product! I have been using them for years. As a CPAP patient, dry mouth during the night is a big issue. Xylimelts solves this completely. Each tablet has a concave side. After you moisten them in your mouth you stick the concave side onto your gums below your teeth, or inside of your cheek. There they stay firmly in place and slowly melt, keeping your mouth perfectly moist all night. My magic bullet is one on each side of my lower jaw and one stuck to the roof of my mouth. They last all night. Xylimelts come in several flavors. Slightly sweet is my favorite, because the mint is a little too strong for me. I cannot live without this product! My daughter does not have a CPAP machine but suffers with sinus congestion. She uses these every night to combat dry mouth associated with mouth breathing during sleep. PRO TIP: once you have them firmly in place, do not try to move them. They are solidly glued down and you can cause irritation by prying them up.
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Reviewed in the United States on December 28, 2025
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Jersey Girl
West Palm Beach, US
★★★★★ 5
Xylimelts work! Don't leave home without them!
I love the mint free version of Xylimelts. The mint flavored ones are also good but I'm not a fan of mint. As far as working to alleviate dry mouth, they work. I'm able to use 1 Xylimelt per night and get about 6 hours of comfort. That is sufficient for my needs. The instructions say that you can use 2 Xylimelts at a time, if you need them. Properly moistened before holding in place on your gum, they will adhere tightly. There are certain products that make my life better and Xylimelts are one of them. While not mentioned in the literature, my experience is that using these over the last two years, I've experienced zero cavities. For me, this makes sense as the Xylimelts help prevent bacteria from adhering. Since dry mouth also encourages cavities, using them regularly give you a leg up at preventing cavities while keeping you comfortable all night. I've never used them in the daytime but they are unobtrusive and were certainly help with chronic dry mouth. Definitely works for me.
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Reviewed in the United States on April 11, 2019
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Mrs. Hill
Grantham, US
★★★★★ 5
Sleep-aid
I've used Oracoat XliMelts for years at night time. I usually only need one for overnight. Keeps my throat dry so I don't keep waking up with a dry mouth.
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Reviewed in the United States on February 8, 2026
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La Milanese
Los Angeles, US
★★★★★ 5
Finally A Product that Works For Me
I have severe dry mouth. It's due to medication which I need. It was so bad my tongue would stick to the roof of my mouth and I couldn't open it again. I had really bad gun problems and lots of dental work from the infections that developed. Eventually I had to give Up a valuable medication. That was the last century and toothpaste and mouthwash weren't enough. I am.now taking medication that I wouldn't be able to if it weren't for Xylimelts. I found keeping up with the right mouthwash and using this does the trick. I do need some squirts of Biotene spray. That's instant saliva. Keeping this pouches against the gum has been a game changer. It doesn't show. I don't feel it except when it runs out, gets tiny and crumbles into my mouth. That is about two hours. A friend used it and it lasts four hours. I dont remember if I felt it after the first couple of days. It's curved design makes it undetectable. I think the first day of two I kept checking it stayed in place. It does. It doesn't need any particular placement. I put It on the tip of my finger and wherever it goes is fine. This really works. Finally a product that does work for very dry mouth. At night I put two in and they're still there in the morning. I m a mouth breather so the dry mouth was really hard on me comfort-wise. People try to be kind and suggest you have a drink of water. They don't know it's not thirst. I will say taking sips of whatever you like helps. But in the last century I had to give up a valuable medication because my tongue stuck to the roof of my mouth so badly I couldn't open it again. Really embarrassing. It wasn't healthy for my gums either. This does it for me. I hope this helps other people who suffer from bad dry mouth or need it less often
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Reviewed in the United States on July 17, 2019
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C J M
Port Orchard, US
★★★★★ 5
I can Sleep Again!
I can get terrible dry mouth while sleeping. These have made it so I can sleep the whole night with out waking up to drink water. I love theses. Gave me back a good nights sleep. I use Two every night. Simple get it a little wet, then I place gently and hold to the outside of the top left molar for a few seconds. The glue will hold it in place with out fear of swallowing. Then I put one on the top right side. They stick well to teeth and can be easily removed. If you leave it alone and fall asleep, it will stay in place for 4-6 hours, providing gentle lubrication to keep your mouth moistened while sleeping. They make your mouth water a little, and the xylitol gives a little lubrication. These are great for mouth breathers and people with sinus issues. These are a real game changer for the better.
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Reviewed in the United States on May 25, 2019

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