{"product_id":"yamaha-yb125-yb125zr-inlet-exhaust-valve-pair-1jp","title":"Yamaha YB125 \/ YB125ZR Inlet \u0026 Exhaust Valve Pair – 1JP","description":"\u003ch2\u003eYamaha YB125 \/ YB125ZR Inlet \u0026amp; Exhaust Valve Pair – 1JP\u003c\/h2\u003e\u003cp\u003eBrand-new unbranded replacement inlet and exhaust engine-valve pair for compatible Yamaha models using the 1JP \/ 5VL valve-reference family.\u003c\/p\u003e\u003ch3\u003eValve Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eValve\u003c\/th\u003e\n\u003cth\u003eHead Diameter\u003c\/th\u003e\n\u003cth\u003eStem Diameter\u003c\/th\u003e\n\u003cth\u003eOverall Length\u003c\/th\u003e\n\u003cth\u003eYamaha Reference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet \/ intake\u003c\/td\u003e\n\u003ctd\u003e25.90–26.10 mm service specification\u003c\/td\u003e\n\u003ctd\u003e4.975–4.990 mm\u003c\/td\u003e\n\u003ctd\u003eApprox. 64.2 mm\u003c\/td\u003e\n\u003ctd\u003e1JP-E2111-00 \/ 5VL-E2111-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003ctd\u003e21.90–22.10 mm service specification\u003c\/td\u003e\n\u003ctd\u003e4.960–4.975 mm\u003c\/td\u003e\n\u003ctd\u003eApprox. 63.3 mm\u003c\/td\u003e\n\u003ctd\u003e1JP-E2121-00 \/ 5VL-E2121-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eYamaha's YBR125 service data specifies nominal 26 mm inlet and 22 mm exhaust heads with approximately 5 mm stems. Independent replacement-valve catalogues give approximately 64.2 mm inlet and 63.3 mm exhaust overall lengths.\u003c\/p\u003e\u003ch3\u003eVehicle Compatibility\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eVerified Scope\u003c\/th\u003e\n\u003cth\u003eFitment Basis\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYB125\u003c\/td\u003e\n\u003ctd\u003e2013, 2014, 2018, 2019, 2022 and 2026 catalogue applications documented\u003c\/td\u003e\n\u003ctd\u003eExact 1JP\/5VL valve family\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYB125ZR\u003c\/td\u003e\n\u003ctd\u003e2018 BH73 catalogue application documented\u003c\/td\u003e\n\u003ctd\u003eExact 1JP exhaust application; part-family catalogue assignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eImportant Fitment Information\u003c\/h3\u003e\u003cp\u003eYamaha YB125 model codes vary significantly by market. Use the 1JP\/5VL valve references as the primary compatibility check.\u003c\/p\u003e\u003cp\u003eYamaha reference numbers are supplied for fitment identification only. This is an unbranded aftermarket valve pair and is not represented as Genuine Yamaha.\u003c\/p\u003e\u003cp\u003eBefore installation, compare the original valve head diameter, stem diameter, overall length, keeper\/collet groove and seating face. Cylinder-head condition, valve-guide clearance and valve-seat condition must also be checked.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x inlet \/ intake valve\u003c\/li\u003e\n\u003cli\u003e1 x exhaust valve\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eCorrect valve seating, guide clearance, spring assembly, valve-clearance adjustment and cam timing are essential. Professional cylinder-head inspection and installation are recommended.\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":57504595673463,"sku":"01247-ENG","price":11.0,"currency_code":"SHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260929_110941.jpg?v=1790774477","url":"https:\/\/www.motomaniauk.com\/products\/yamaha-yb125-yb125zr-inlet-exhaust-valve-pair-1jp","provider":"Moto Mania UK","version":"1.0","type":"link"}