{"product_id":"cylinder-kit-58mm-bore-piston-rings-gaskets-2004-2017-honda-cbr125r-fs125","title":"CYLINDER KIT 01-17 HONDA CBR FS SONIC 125 R 58mm BORE PISTON RINGS GASKETS 12100-KGH-900","description":"\u003cp\u003eThis 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.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eSuitable for addressing low compression, piston seizure, cylinder blow-through, or cylinder failure\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eIncludes cylinder, piston, piston rings, wrist pin, circlips and a full top-end gasket kit\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eAnodised piston construction supports improved heat resistance and service life\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eHigh-performance gasket materials support increased reliability\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCost-effective aftermarket replacement for original top-end components\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eModification allows compatibility with both Sonic and CBR engines after correct fitting preparation\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eBore diameter: 58 mm STD\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eStroke: 47.2 mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston pin diameter: 13 mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston pin material: Steel\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCompression ratio: 11:1\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eStandard bore size: 58 mm x 47.2 mm stroke\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder: 12100-KGH-900\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder base gasket: 12191-KGH-901\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder head gasket: 12251-KTY-D30\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston STD: 13101-KGH-902\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston pin: 13111-KGH-903\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston ring set STD: 13011-KGH-305\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston circlips: 13115-GN5-910\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eTensioner gasket: 14560-KGH-900\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eValve stem seal: 12209-GB4-682\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eHonda CBR125R, 2004–2017\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eHonda FS125 Sonic, 2001–2008\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eThe cylinder surface design differs slightly between Sonic and CBR125 models\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eFor CBR125R installation, modification of the crankcase surface is required to eliminate any gap\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eModification methods may include welding or using a two-component epoxy aluminium adhesive\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eAfter modification, the cylinder is suitable for use with Sonic and CBR engines\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x 58 mm cylinder, 12100-KGH-900\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x piston\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x piston ring set\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x wrist pin\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e2 x circlips\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x cylinder base gasket, 12191-KGH-901\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x cylinder head gasket\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e1 x tensioner gasket\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":56653740802421,"sku":"56-K9033.58.CLK","price":99.54,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/screenshot-2025-05-08-160754.jpg?v=1769191723","url":"https:\/\/www.smxoffroad.com\/es\/products\/cylinder-kit-58mm-bore-piston-rings-gaskets-2004-2017-honda-cbr125r-fs125","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}