SKU: 9484264703

58mm 2001-2008 Honda FS125 Sonic Cylinder Piston Gasket Rebuild Kit 125cc 12100-KGH-900

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Description

58mm 2001-2008 Honda FS125 Sonic Cylinder Piston Gasket Rebuild Kit 125cc 12100-KGH-90058mm Cylinder Piston Gasket Rebuild Kit Fit For Honda CBR R 125 Sonic 125 4T 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). Piston is anodized for superior heat resistance and longer lifespan. The gaskets use performance materials to

58mm Cylinder Piston Gasket Rebuild Kit Fit For Honda CBR R 125 / Sonic 125 4T

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).
Piston 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 standard bore size - 58mm x 47.2mm stroke, 13mm steel piston pin.
Compression Ratio: 11:1.
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
Displacement: 124cc
Bore Type: Standard Bore
Cylinder Type: KGH
Bore diameter: STD 58mm
Stroke: 47.2mm
Pin diameter: 13mm

Replacement Part Number:
Cylinder: 12100-KGH-900
Cylinder Base Gasket: 12191-KGH-901
Cylinder Head Gasket: 12251-KTY-D30
Piston (Std): 13101-KGH-902
Pin, Piston: 13111-KGH-903
Piston Ring Set (Std): 13011-KGH-305
Circlips, piston: 13115-GN5-910
Tensioner Gasket: 14560-KGH-900
Valve Stem Seal: 12209-GB4-682

Attention:
This kit from Honda Sonic 125. The Sonic is fitted with the European CBR125R and Indonesian CS1 4-stroke engine.
Difference between Sonic and CBR 125 cylinder only crankcase surface.
CBR125: For kit neccessary modify you crankcase. Modify only surface, look second pictures. Occlude gap. (welding or aluminium glue : Load gap in crankcase, with two component epoxy base aluminium glue.).
After modify use CBR or Sonic cylinder as well good.

Fits Models:
Fit for Honda CBR125R 2004-2017
Fit for Honda FS125 Sonic 2001-2008

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

Package Includes:
1x 58mm Cylinder (12100-KGH-900)
1x Piston
1x Piston Ring Set
1x Wristpin
1x Circlip(2)
1x Cylinder Base Gasket (12191-KGH-901)
1x Cylinder Head Gasket
1x Tensioner Gasket
2x Valve Stem Seals

Note:
This cylinder(Sonic 125) is NOT the complete same look as the original CBR125, the crankcase suface need to modify, please don't purchase if you can NOT accept.

Carefully compare to your old parts to be sure this is the correct part for your machine.

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: 9484264703

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Viktoriia Kharalampova
Lake Worth, US
★★★★★ 5
Great quality
Color: 6pcs
Great quality. Almost like original mops.
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Reviewed in the United States on February 8, 2026
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Demelza Irizarry
Waukegan, US
★★★★★ 5
Clean mop heads are important!
Color: 6pcs
Fits the eufy Omni C20 robot vac perfectly. Would happily purchase again keep my floors clean
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Reviewed in the United States on November 14, 2025
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Amazon Customer
Grantham, US
★★★★★ 5
Fits and works the same as the original
Color: 6pcs
I like to change my washing pads on the Eufy C20 every Friday (floors are vacuumed Mon, Wed, Fri and get washed on Mon and Fri as well). I will send the mop out too just to do the kitchen once I have had a big cooking session. These fit well and work as well as the original. I'm so happy to have extras as my laundry sometimes take several days to get caught up. Recommended.
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Reviewed in the United States on June 13, 2025
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Amazon Customer
Chelsea, US
★★★★★ 2
Poor quality
Color: 12pcs
I ordered these for my Eufy robot mop/ vacuum. While they fit great they are of terrible quality. They shredded on the first use and I have tile floors. Maybe I got a defective batch but I will not be buying these again🫤
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Reviewed in the United States on May 28, 2026
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Caitlin
Draper, US
★★★★★ 1
Save your time and order the eufy brand.
Color: 6pcs
Started fraying immediately. Tried a different pair and had the same problem.
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Reviewed in the United States on May 21, 2026

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