{"product_id":"main-jet-98-for-si-carbs-for-scooters-mopeds","title":"Main Jet #98 for SI Carbs for Scooters \u0026 Mopeds","description":"\u003ch2\u003eMain Jet #98 for SI Carbs on Scooters and Mopeds\u003c\/h2\u003e\u003cp\u003eThe Main Jet #98 is a key component in scooter and moped carburetors. It controls how much fuel reaches the engine, which affects how smoothly it runs and how it performs. Built to work with a range of vintage machines, particularly those using SI carburetors, this jet handles a central role in fuel delivery. It belongs to the \u003ca href=\"\/collections\/scooter-carburetors\"\u003erange of carburetor jets for scooters\u003c\/a\u003e and has a direct effect on engine efficiency and throttle response.\u003c\/p\u003e\u003ch3\u003eGetting to Know Jet Sizes\u003c\/h3\u003e\u003cp\u003eThis jet has a cone-shaped design and sits in the lower part of the main jet setup. Available sizes run from 82 to 165, and many vintage Vespa scooters generally use jets in the 85 to 116 range. If your engine has been modified for more power, a larger jet may be needed to supply the extra fuel it draws.\u003c\/p\u003e\u003ch3\u003eWhy Correct Jetting Matters\u003c\/h3\u003e\u003cp\u003eFinding the right jet size usually takes some testing. Changing the jet can bring better performance and improved fuel economy, so it is an important step in any tuning job. For more detailed jetting instructions, specialized references or step-by-step guides are worth looking at.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 98\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Main jet stack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Dell'Orto\/Spaco SI carburetors with a compatible SI main jet stack (20\/15, 20\/17, 20\/20, 24\/24)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eCompatible with:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVespa vintage large frame: VNB, VBA, VBB, VNC 125 Super, VBC 150 Super, VNL GT\/GTR, VLB Sprint, VLA GL150, VSD Rally 180, VSE Rally 200 (SI carburetor setup required)\u003c\/li\u003e\n\u003cli\u003eVespa P\/PX: VNX 125, VLX 150, VSX 200 E (SI carburetor setup required)\u003c\/li\u003e\n\u003cli\u003eVespa VSB GS 160, VSC SS 180 (only with a compatible SI carburetor setup)\u003c\/li\u003e\n\u003cli\u003eStella 150 2T (compatible SI carburetor setup only)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Pick the size that suits your engine. A #98 is not necessarily the factory size for every vehicle on this list. Use it only as an SI main jet, not as an idle or air-corrector jet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/scooter-carburetors\"\u003eScooter Carburetors \u0026amp; Jets\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51138505932857,"sku":"TT-25803","price":4.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/main-jet-98-for-si-carbs-1.jpg?v=1794375498","url":"https:\/\/www.trendtimes.com\/products\/main-jet-98-for-si-carbs-for-scooters-mopeds","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}