{"product_id":"yamaha-ybr125-custom-54mm-cylinder-piston-kit-5vl-e1310-10","title":"Yamaha YBR125 YBR125 Custom 54mm Cylinder Piston Kit 5VL-E1310-10","description":"\u003ch2\u003eYamaha YBR125 \/ YBR125 Custom 54 mm Cylinder \u0026amp; Piston Kit\u003c\/h2\u003e\n\u003cp\u003eStandard-bore replacement cylinder and piston top-end kit for Yamaha YBR125 and YBR125 Custom models using the 54 mm 5VL-series engine specification. Ideal for a top-end rebuild where the original cylinder or piston is worn, scored, seized or has low compression.\u003c\/p\u003e\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e54 mm air-cooled cylinder barrel\u003c\/li\u003e\n\u003cli\u003eStandard-size piston\u003c\/li\u003e\n\u003cli\u003eComplete piston-ring set\u003c\/li\u003e\n\u003cli\u003eGudgeon \/ wrist pin\u003c\/li\u003e\n\u003cli\u003e2 piston-pin circlips\u003c\/li\u003e\n\u003cli\u003e2 valve-stem oil seals\u003c\/li\u003e\n\u003cli\u003eCylinder-head gasket\u003c\/li\u003e\n\u003cli\u003eCylinder-base gasket\u003c\/li\u003e\n\u003cli\u003eCam-chain-tensioner gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA complete standard-bore top-end replacement set for repairing a worn, scored or damaged cylinder and piston assembly.\u003c\/p\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNominal bore: \u003cstrong\u003e54 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNominal capacity: \u003cstrong\u003e124\/125 cc\u003c\/strong\u003e with the standard crankshaft stroke\u003c\/li\u003e\n\u003cli\u003eEngine type: air-cooled 4-stroke single-cylinder Yamaha\/YBR-pattern engine\u003c\/li\u003e\n\u003cli\u003eReplacement type: standard bore, not a big-bore conversion\u003c\/li\u003e\n\u003cli\u003eProduct type: unbranded aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eYamaha OE Reference Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder: \u003cstrong\u003e5VL-E1310-10-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStandard piston: \u003cstrong\u003e5VL-E1631-10-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCylinder-head gasket: \u003cstrong\u003e5VL-E1181-00-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCylinder-base gasket: \u003cstrong\u003e5VL-E1351-10-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOE numbers are supplied for identification and comparison. The item supplied is an aftermarket replacement and is not represented as a genuine Yamaha part.\u003c\/p\u003e\n\u003ch3\u003eManufacturer Cross References\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAirsal 54 mm reference family: \u003cstrong\u003e02126854\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAirsal related reference: \u003cstrong\u003e06126854\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAirsal related reference: \u003cstrong\u003e11126854\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAirsal related reference: \u003cstrong\u003e14126854\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYamaha YBR125 - selected 2005-2017 applications using the 54 mm 5VL-series cylinder\u003c\/li\u003e\n\u003cli\u003eYamaha YBR125 Custom - applications using the same 54 mm Yamaha engine specification\u003c\/li\u003e\n\u003cli\u003eConfirm against OE cylinder 5VL-E1310-10-00 and the original engine before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility Check\u003c\/h3\u003e\n\u003cp\u003eCheck the original engine before ordering. Compare the cylinder shape, 54 mm bore, cylinder stud pattern, cam-chain tunnel, piston crown, gudgeon-pin size and gasket profiles with the kit shown. Model names can cover more than one engine specification, particularly on imported or later-production motorcycles.\u003c\/p\u003e\n\u003cp\u003eIf the original cylinder has been rebored, the engine has previously been converted to a larger capacity, or the engine number\/specification does not match the Yamaha\/YBR-pattern unit, this standard 54 mm kit may not be suitable.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eClean all gasket faces and oil passages before assembly. Check piston-to-cylinder clearance, piston-ring end gaps and ring orientation before fitting. Install the piston with the correct orientation, use new gaskets and circlips, and tighten the cylinder\/head fasteners to the motorcycle manufacturer's workshop specifications. Check valve timing and valve clearances before starting the engine.\u003c\/p\u003e\n\n\u003ch3\u003eDelivery \u0026amp; Returns\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFree UK delivery with an estimated 2-3 working-day service\u003c\/li\u003e\n\u003cli\u003e30-day returns, subject to the item being returned in its original condition\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":57391812575607,"sku":"00918-ENG","price":32.0,"currency_code":"SHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260806_130209.png?v=1787059396","url":"https:\/\/www.motomaniauk.com\/products\/yamaha-ybr125-custom-54mm-cylinder-piston-kit-5vl-e1310-10","provider":"Moto Mania UK","version":"1.0","type":"link"}