{"product_id":"main-jet-51-shashb-132590","title":"Main Jet #51; SHA\/SHB Carbs","description":"Small Frame Vespas have only two jets: a main jet that the needle passes through, and an idle jet. Main jets come in various sizes ranging 37-88. This is the main jet for Vespa small frames with 16mm and 19mm carbs, also fits PHBG carbs. \u003cp\u003e\n\nJetting is something that takes trial and error. See our \u003ca href=\"http:\/\/www.scooterworks.com\/blog\/carburetor-jetting-101\"\u003eblog of jetting instructions\u003c\/a\u003e for more info.\u003c\/p\u003e","brand":"Spaco","offers":[{"title":"Default Title","offer_id":46756913053976,"sku":"132590","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/B9F864CE-FD28-45FF-B53C-2F5635E6BE0A.png?v=1729562251","url":"https:\/\/www.scooterworks.com\/products\/main-jet-51-shashb-132590","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}