{"product_id":"cylinder-kit-58mm-bore-piston-rings-gaskets-2004-2017-honda-cbr125r-fs125","title":"Cylinder Kit 58mm Bore Piston Rings Gaskets 2004-2017 Honda CBR125R FS125","description":"\u003cp\u003eThis 58mm Cylinder Piston Gasket Rebuild Kit is an aftermarket top-end replacement designed to restore the cylinder and piston assembly. The kit includes all necessary components to address issues such as low compression, cylinder blow-through, or piston seizure. Modification to the crankcase surface may be required for proper fitment depending on engine type.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eHonda CBR125R 2004–2017\u003c\/li\u003e\n\t\u003cli\u003eHonda FS125 Sonic 2001–2008\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eSuitable for addressing low compression, piston seizure, or cylinder failure\u003c\/li\u003e\n\t\u003cli\u003eIncludes cylinder, piston, rings, wristpin, clips, and full top-end gasket kit\u003c\/li\u003e\n\t\u003cli\u003ePiston is anodized for improved heat resistance and extended service life\u003c\/li\u003e\n\t\u003cli\u003eGaskets made from high-performance materials for increased reliability\u003c\/li\u003e\n\t\u003cli\u003eDesigned for standard bore size: 58mm x 47.2mm stroke\u003c\/li\u003e\n\t\u003cli\u003e13mm steel piston pin\u003c\/li\u003e\n\t\u003cli\u003eCompression Ratio: 11:1\u003c\/li\u003e\n\t\u003cli\u003eCost-effective replacement for original components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eBore Diameter 58mm (STD)\u003c\/li\u003e\n\t\u003cli\u003eStroke 47.2mm\u003c\/li\u003e\n\t\u003cli\u003ePin Diameter 13mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eCylinder 12100-KGH-900\u003c\/li\u003e\n\t\u003cli\u003eCylinder Base Gasket 12191-KGH-901\u003c\/li\u003e\n\t\u003cli\u003eCylinder Head Gasket 12251-KTY-D30\u003c\/li\u003e\n\t\u003cli\u003ePiston (Std) 13101-KGH-902\u003c\/li\u003e\n\t\u003cli\u003ePin, Piston 13111-KGH-903\u003c\/li\u003e\n\t\u003cli\u003ePiston Ring Set (Std) 13011-KGH-305\u003c\/li\u003e\n\t\u003cli\u003eCirclips, Piston 13115-GN5-910\u003c\/li\u003e\n\t\u003cli\u003eTensioner Gasket 14560-KGH-900\u003c\/li\u003e\n\t\u003cli\u003eValve Stem Seal 12209-GB4-682\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAttention\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eThis kit originates from the Honda Sonic 125, which shares the same engine platform as the European CBR125R and Indonesian CS1 4-stroke engines\u003c\/li\u003e\n\t\u003cli\u003eThe cylinder surface design differs slightly between Sonic and CBR125 models\u003c\/li\u003e\n\t\u003cli\u003eFor CBR125R installation, modification of the crankcase surface is required to eliminate any gap (modification methods include welding or using a two-component epoxy aluminium glue)\u003c\/li\u003e\n\t\u003cli\u003eAfter modification, the cylinder is compatible with both Sonic and CBR engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e1x 58mm Cylinder (12100-KGH-900)\u003c\/li\u003e\n\t\u003cli\u003e1x Piston\u003c\/li\u003e\n\t\u003cli\u003e1x Piston Ring Set\u003c\/li\u003e\n\t\u003cli\u003e1x Wristpin\u003c\/li\u003e\n\t\u003cli\u003e2x Circlips\u003c\/li\u003e\n\t\u003cli\u003e1x Cylinder Base Gasket (12191-KGH-901)\u003c\/li\u003e\n\t\u003cli\u003e1x Cylinder Head Gasket\u003c\/li\u003e\n\t\u003cli\u003e1x Tensioner Gasket\u003c\/li\u003e\n\t\u003cli\u003e2x Valve Stem Seals\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dirt Racing","offers":[{"title":"Default Title","offer_id":51392293732618,"sku":"56-K9033.58.CLK","price":104.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/2757\/4026\/files\/Screenshot_2025-05-08_160754.jpg?v=1759592794","url":"https:\/\/2bros-mx.com\/products\/cylinder-kit-58mm-bore-piston-rings-gaskets-2004-2017-honda-cbr125r-fs125","provider":"2bros-mx.com","version":"1.0","type":"link"}