{"product_id":"mikuni-large-round-main-jets-4-pk-165-134-7165","title":"Mikuni Large Round Main Jets - 4\/PK #165","description":"\u003cp\u003eMikuni large round main jets (#165) for V-twin carburetors, sold in a 4-pack for tuning fuel delivery. These genuine Mikuni jets meter fuel volume into the carburetor's main circuit at cruise and part-throttle RPM ranges.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine Mikuni large round jets\u003c\/li\u003e\n  \u003cli\u003e#165 main jet size\u003c\/li\u003e\n  \u003cli\u003e4-pack quantity\u003c\/li\u003e\n  \u003cli\u003ePrecision-drilled orifice\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mikuni\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e FN100604-165\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4 per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits V-twin motorcycles equipped with Mikuni large-round carburetors. Verify your current jet size and carburetor type before ordering.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat does a main jet do?\u003c\/h3\u003e\n\u003cp\u003eThe main jet controls fuel mixture at cruise and part-throttle RPMs. Larger numbers (like #165) richen the mixture; smaller numbers lean it out.\u003c\/p\u003e\n\u003ch3\u003eHow do I know which jet size I need?\u003c\/h3\u003e\n\u003cp\u003eCheck your carburetor manual or current jet stamp. Jetting depends on altitude, air temperature, and engine tune — consult your carb spec sheet.\u003c\/p\u003e\n\u003ch3\u003eAre these OEM Mikuni parts?\u003c\/h3\u003e\n\u003cp\u003eYes — these are genuine Mikuni jets manufactured to OEM specifications.\u003c\/p\u003e\n\u003ch3\u003eCan I mix jet sizes if I'm tuning?\u003c\/h3\u003e\n\u003cp\u003eYes. Many riders install larger or smaller jets to dial in mixture for their climate and setup. Always test and verify engine performance after any jet change.\u003c\/p\u003e","brand":"Mikuni","offers":[{"title":"Default Title","offer_id":53034992435311,"sku":"134-7165","price":20.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_69bb9c3b-bfe8-4378-b25e-5130c3d1a56e.png?v=1779558744","url":"https:\/\/vtwinbikers.com\/products\/mikuni-large-round-main-jets-4-pk-165-134-7165","provider":"Vtwinbikers","version":"1.0","type":"link"}