58mm Cylinder Piston Gasket Rebuild Kit 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.

MOTORCYCLE PART FITMENT GUIDE

This part fits vehicles listed in the description and compatibility chart ONLY

✔ 100% FITMENT VERIFICATION REQUIRED

This aftermarket/remanufactured part requires matching:

• Exact Year/Make/Model/Engine CC

• OEM Part # (stamped on your original component)

• Physical Measurements (see dimension diagrams in photos)

CRITICAL CHECK POINTS:

[✓] Compare mounting hole patterns

[✓] Match electrical connectors (if applicable)

[✓] Verify clearance requirements

[✓] Check sub-model variations (e.g., ABS vs non-ABS)

FREE FITMENT CONFIRMATION:

Send us:

    ✅ VIN (17-digit)   ✅ Clear photos of your original part    ✅ OEM numbers from your current component