Cylinder Kit 01-17 Honda Cbr Fs Sonic 125 R 58mm Bore Piston Rings Gaskets 12100-KGH-900

Description

This 58 mm cylinder piston gasket rebuild kit is an aftermarket top-end replacement designed to restore the cylinder and piston assembly on compatible Honda 125 cc engines. It is intended for repair work involving low compression, cylinder blow-through, piston seizure, or cylinder failure, and includes the main components required for a cylinder, piston and gasket rebuild. The kit originates from the Honda Sonic 125 engine platform, which shares the same engine platform as the European CBR125R and Indonesian CS1 4-stroke engines; for CBR125R installation, crankcase surface modification may be required due to differences in cylinder surface design.

Features

  • Suitable for addressing low compression, piston seizure, cylinder blow-through, or cylinder failure
  • Includes cylinder, piston, piston rings, wrist pin, circlips and a full top-end gasket kit
  • Anodised piston construction supports improved heat resistance and service life
  • High-performance gasket materials support increased reliability
  • Cost-effective aftermarket replacement for original top-end components
  • Modification allows compatibility with both Sonic and CBR engines after correct fitting preparation

Specifications

  • Bore diameter: 58 mm STD
  • Stroke: 47.2 mm
  • Piston pin diameter: 13 mm
  • Piston pin material: Steel
  • Compression ratio: 11:1
  • Standard bore size: 58 mm x 47.2 mm stroke

Cross-Reference OEM Part Numbers

  • Cylinder: 12100-KGH-900
  • Cylinder base gasket: 12191-KGH-901
  • Cylinder head gasket: 12251-KTY-D30
  • Piston STD: 13101-KGH-902
  • Piston pin: 13111-KGH-903
  • Piston ring set STD: 13011-KGH-305
  • Piston circlips: 13115-GN5-910
  • Tensioner gasket: 14560-KGH-900
  • Valve stem seal: 12209-GB4-682

Vehicle Fitments

  • Honda CBR125R, 2004–2017
  • Honda FS125 Sonic, 2001–2008

Installation Notes

  • The cylinder surface design differs slightly between Sonic and CBR125 models
  • For CBR125R installation, modification of the crankcase surface is required to eliminate any gap
  • Modification methods may include welding or using a two-component epoxy aluminium adhesive
  • After modification, the cylinder is suitable for use with Sonic and CBR engines

Package Includes

  • 1 x 58 mm cylinder, 12100-KGH-900
  • 1 x piston
  • 1 x piston ring set
  • 1 x wrist pin
  • 2 x circlips
  • 1 x cylinder base gasket, 12191-KGH-901
  • 1 x cylinder head gasket
  • 1 x tensioner gasket

Cylinder Kit 01-17 Honda Cbr Fs Sonic 125 R 58mm Bore Piston Rings Gaskets 12100-KGH-900

Product form

This 58 mm cylinder piston gasket rebuild kit is an aftermarket top-end replacement designed to restore the cylinder and piston... Read more

5 in stock 1-2 business days

£99.54 Incl. VAT

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    SKU: 56-K9033.58.CLK

    • Free shipping on all orders above £75
    • No hassle returns within 30 days

    Description

    This 58 mm cylinder piston gasket rebuild kit is an aftermarket top-end replacement designed to restore the cylinder and piston assembly on compatible Honda 125 cc engines. It is intended for repair work involving low compression, cylinder blow-through, piston seizure, or cylinder failure, and includes the main components required for a cylinder, piston and gasket rebuild. The kit originates from the Honda Sonic 125 engine platform, which shares the same engine platform as the European CBR125R and Indonesian CS1 4-stroke engines; for CBR125R installation, crankcase surface modification may be required due to differences in cylinder surface design.

    Features

    • Suitable for addressing low compression, piston seizure, cylinder blow-through, or cylinder failure
    • Includes cylinder, piston, piston rings, wrist pin, circlips and a full top-end gasket kit
    • Anodised piston construction supports improved heat resistance and service life
    • High-performance gasket materials support increased reliability
    • Cost-effective aftermarket replacement for original top-end components
    • Modification allows compatibility with both Sonic and CBR engines after correct fitting preparation

    Specifications

    • Bore diameter: 58 mm STD
    • Stroke: 47.2 mm
    • Piston pin diameter: 13 mm
    • Piston pin material: Steel
    • Compression ratio: 11:1
    • Standard bore size: 58 mm x 47.2 mm stroke

    Cross-Reference OEM Part Numbers

    • Cylinder: 12100-KGH-900
    • Cylinder base gasket: 12191-KGH-901
    • Cylinder head gasket: 12251-KTY-D30
    • Piston STD: 13101-KGH-902
    • Piston pin: 13111-KGH-903
    • Piston ring set STD: 13011-KGH-305
    • Piston circlips: 13115-GN5-910
    • Tensioner gasket: 14560-KGH-900
    • Valve stem seal: 12209-GB4-682

    Vehicle Fitments

    • Honda CBR125R, 2004–2017
    • Honda FS125 Sonic, 2001–2008

    Installation Notes

    • The cylinder surface design differs slightly between Sonic and CBR125 models
    • For CBR125R installation, modification of the crankcase surface is required to eliminate any gap
    • Modification methods may include welding or using a two-component epoxy aluminium adhesive
    • After modification, the cylinder is suitable for use with Sonic and CBR engines

    Package Includes

    • 1 x 58 mm cylinder, 12100-KGH-900
    • 1 x piston
    • 1 x piston ring set
    • 1 x wrist pin
    • 2 x circlips
    • 1 x cylinder base gasket, 12191-KGH-901
    • 1 x cylinder head gasket
    • 1 x tensioner gasket

    Shipping & Delivery

    How long will my item take to arrive?

    Orders are typically dispatched within 1 working day and are shipped on a 24hour (non-guaranteed) service.

    Where do you ship to?

    We currently only ship orders within the UK.

    How can I track my order?

    Once your order has been dispatched, you will receive a tracking code. Tracking information is emailed to the email address that was provided when placing the order.

    Can I collect my order?

    Unfortunately we do not offer order collections from our fulfilment centre.

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