SKU: 57320487924

1979-1983 Honda CT 125 Cylinder Barrel Piston Kit 12100-383-030 12191-330-306

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Description

1979-1983 Honda CT 125 Cylinder Barrel Piston Kit 12100-383-030 12191-330-30656. 5mm Cylinder Piston Gasket Top End Rebuild Kit For Honda CB125S CL125S SL125 XL125 TL125 CT125 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

56.5mm Cylinder Piston Gasket Top End Rebuild Kit For Honda CB125S CL125S SL125 XL125 TL125 CT125

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).
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 - 56.5 mm, 15mm 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
Displacement: 124cc
Bore Type: Standard Bore
Bore diameter: 56.5mm
Pin diameter: 15mm
Pin Overall Length: 48mm

Replacement Part Number:
Cylinder: 12100-383-030
Cylinder Base Gasket: 12191-330-306
Cylinder Head Gasket: 12251-437-P00
Piston: 13101-383-030
Pin, Piston: 13111-440-000
Piston Ring Set (Std): 13011-383-621
Circlips, piston (2): 94601-15000

Always compare part numbers to your parts schematics and cross reference appropriately.

Fits Make/Model/Year:
Fit for Honda CB 125 S (1976-1985)
Fit for Honda CT 125 (1979-1983)
Fit for Honda CL 125 S (1973-1974)
Fit for Honda SL 125 (1971-1974)
Fit for Honda TL 125 (1973-1988)
Fit for Honda XL 125 (1976-1978)
Fit for Honda XL 125 S (1979-1987)

In 1976, Honda implemented significant modifications to the 125s cylinder head assembly, transitioning from a single-unit design to a two-piece configuration.
While retaining the cylinder's fundamental architecture, engineers enlarged the bore diameter from 56mm to 56.5mm, resulting in increased displacement from 122cc to 124cc.
This revised 56.5mm cylinder assembly, introduced with the 1976 model year updates, maintains complete compatibility with earlier 125s motorcycles despite these technical enhancements.

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

Package Includes:
1x 56.5mm Cylinder
1x Piston
1x Piston Ring Set
1x 15mm Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Cylinder Head Gasket
2x Valve Stem Seals

(Comes exactly as pictured.)

Note:
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: 57320487924

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★★★★★ 5
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Reviewed in the United States on May 12, 2026
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Keisha
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★★★★★ 4
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Reviewed in the United States on March 30, 2026
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Kaitlynn
Los Angeles, US
★★★★★ 5
Good for light stuff
Color: Black, Size: 15 inches, Color: Black, Size: 15 inches
Good product. Very light though and if it’s in dry wall won’t hold something really heavy. I don’t think it would hold 20 pounds just light. I put over my washer and dryer and put one right on top that way I can put heavy stuff on that side without it weighing down and being ripped out of the wall. I won’t be putting heavy stuff on the right side I used 4 pieces and the wall is about 60-62 inches long
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Reviewed in the United States on December 5, 2025
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Lowell, US
★★★★★ 5
Perfect sized floating shelves
Color: Black, Size: 24 inches, Color: Black, Size: 24 inches
These are great and the perfect width. I had my contractor install them because my tile had to have a hole drilled into it. I love that it looks seemless and flat to the tile. New bathroom renovation. I am very pleased. Holds a few towels also candles and a little plant with extra space. Perfect for a minimal look or if you have a small bathroom. Color was spot on.
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Reviewed in the United States on March 30, 2026
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