{"product_id":"k157fmi-125cc-inlet-exhaust-valve-pair","title":"K157FMI 125cc Inlet \u0026 Exhaust Valve Pair – 5mm Stem","description":"\u003ch2\u003eK157FMI 125cc Inlet \u0026amp; Exhaust Valve Pair\u003c\/h2\u003e\u003cp\u003eBrand-new unbranded replacement inlet and exhaust engine-valve pair for 125cc motorcycles using the \u003cstrong\u003eK157FMI \/ K157FMI-GS\u003c\/strong\u003e air-cooled four-stroke engine 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\u003eK157FMI 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\u003e25.5 mm\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003ctd\u003eApprox. 94 mm\u003c\/td\u003e\n\u003ctd\u003eK157FMI02-22A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003ctd\u003e22.5 mm\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003ctd\u003eApprox. 94 mm\u003c\/td\u003e\n\u003ctd\u003eK157FMI02-13A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe K157FMI parts manual identifies one inlet and one exhaust valve in the camshaft\/valve assembly. Independent K157FMI valve catalogues support the 25.5 mm inlet, 22.5 mm exhaust, 5 mm stem and approximately 94 mm overall lengths.\u003c\/p\u003e\u003ch3\u003eVerified K157FMI Motorcycle Applications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModels\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\u003eLexmoto\u003c\/td\u003e\n\u003ctd\u003eAdrenaline 125 \/ Adrenaline 125 EFI; Valiant 125 \/ Valiant 125 EFI; Lowride 125; Street 125\u003c\/td\u003e\n\u003ctd\u003eK157FMI \/ K157FMI-GS engine or direct K157FMI valve catalogue application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSinnis\u003c\/td\u003e\n\u003ctd\u003eApache 125; Apache SMR 125; Blade 125; Bomber 125; Cafe 125; Max II 125; Retrostar 125; Scrambler 125; Stealth 125; Trackstar 125; Vista 125\u003c\/td\u003e\n\u003ctd\u003eOfficial Sinnis K157FMI engine family and K157FMI valve-train parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeeway\u003c\/td\u003e\n\u003ctd\u003eStrike 125\u003c\/td\u003e\n\u003ctd\u003eK157FMI engine-family parts; Keeway catalogue uses matching 129183090002 inlet and 129193090002 exhaust valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse\u003c\/td\u003e\n\u003ctd\u003eAdrenaline 125\u003c\/td\u003e\n\u003ctd\u003eDirect K157FMI inlet-valve \/ valve-train compatibility catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperbyke\u003c\/td\u003e\n\u003ctd\u003eRMR 125; RSR125\u003c\/td\u003e\n\u003ctd\u003eDirect K157FMI valve-train compatibility catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMash\u003c\/td\u003e\n\u003ctd\u003eSeventy Five 125\u003c\/td\u003e\n\u003ctd\u003eDirect K157FMI valve-train compatibility catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMutt\u003c\/td\u003e\n\u003ctd\u003eFat Sabbath; Mongrel 125\u003c\/td\u003e\n\u003ctd\u003eDirect K157FMI valve-train compatibility catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDirect Bikes\u003c\/td\u003e\n\u003ctd\u003e125cc Enduro S E3; 125cc Hurricane E3\u003c\/td\u003e\n\u003ctd\u003eDirect K157FMI valve-train compatibility catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDafier \/ SFM \/ UM \/ Zennco\u003c\/td\u003e\n\u003ctd\u003eDFE125-8A; Roadster \/ ZX125 \/ ZZ125; Scrambler Classic 125; Bullet\u003c\/td\u003e\n\u003ctd\u003eDirect K157FMI valve-train compatibility catalogue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eImportant Fitment Information\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eThis listing is intentionally dedicated to the K157FMI engine family.\u003c\/strong\u003e Do not order by 125cc capacity or motorcycle appearance alone.\u003c\/p\u003e\u003cp\u003eBefore ordering, confirm the engine code and compare the old valves with the dimensions above. Some visually similar engines such as SK157FMI-G, KW157FMI, QJ157FMI and other 156\/157FMI variants can use different valves.\u003c\/p\u003e\u003cp\u003eKeeway RKS\/RKV\/TX models use very similar 157FMI-2A\/2B GS-derived engines and matching valve dimensions on certain versions, but they are not included in this K157FMI-only fitment table because the engine-code suffix differs. Keeway Strike 125 is retained because it is directly documented in the K157FMI parts family.\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\u003eValve replacement requires correct valve-seat condition, valve-to-guide clearance, spring installation and valve-clearance adjustment. Cylinder-head inspection and installation by a competent motorcycle mechanic are recommended.\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":57504573751671,"sku":"01063-ENG","price":18.0,"currency_code":"SHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260929_111714.jpg?v=1790774438","url":"https:\/\/www.motomaniauk.com\/products\/k157fmi-125cc-inlet-exhaust-valve-pair","provider":"Moto Mania UK","version":"1.0","type":"link"}