{"product_id":"main-jet-118-for-si-carbs-for-scooters-mopeds","title":"Main Jet #118 for SI Carbs for Scooters \u0026 Mopeds","description":"\u003ch2\u003eMain Jet #118 for SI Carburetors on Scooters and Mopeds\u003c\/h2\u003e\u003cp\u003eThe Main Jet #118 is a key part of SI carburetors fitted to scooters and mopeds. This small, cone-shaped jet controls how much fuel passes through, which has a direct effect on engine output and efficiency. Among \u003ca href=\"\/collections\/scooter-carburetors\"\u003escooter carburetors \u0026amp; jets\u003c\/a\u003e, it is one of the parts most often changed when tuning. Several sizes exist, so this particular jet suits a range of engine setups, especially those that have been modified for more performance.\u003c\/p\u003e\u003ch3\u003eHow It Works and Why It Matters\u003c\/h3\u003e\u003cp\u003eThe main jet sits at the lower end of the jet stack, where it meters the fuel going to the engine. The jet number reflects the flow rate, so a higher number lets more fuel through. Riders often try several sizes to reach the performance they want, particularly on modified engines that need extra fuel for stronger acceleration and higher top speed.\u003c\/p\u003e\u003ch3\u003eSigns It May Need Replacing\u003c\/h3\u003e\u003cp\u003eIf acceleration feels slow or fuel use has crept up, the main jet is worth inspecting. Jets can clog or wear down over time, and either problem can noticeably hurt how the engine runs. Changes to the scooter or moped engine can also call for a different jet size so the vehicle keeps running smoothly and economically.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 118\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Bottom of the main jet stack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e SI carburetors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Dell'Orto\/Spaco SI carburetors on vintage Vespa 125, 150, 160\/180, 200 and Stella 150 2T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVespa 125 (VNB, VNC Super 125, VNL GT\/GTR, VNX P\/PX 125)\u003c\/li\u003e\n\u003cli\u003eVespa 150 (VBA, VBB, VBC Super 150, VLA GL150, VLB Sprint, VLX P\/PX 150)\u003c\/li\u003e\n\u003cli\u003eVespa 160\/180 (VSB GS 160, VSC SS 180, VSD Rally 180, with compatible SI setup)\u003c\/li\u003e\n\u003cli\u003eVespa 200 (VSE Rally 200, VSX P\/PX 200 E)\u003c\/li\u003e\n\u003cli\u003eStella 150 2T (with compatible SI carburetor)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Pair your carburetor with an SI type (SI 20\/15, 20\/17, 20\/20 or 24\/24) and confirm the main jet stack lines up, since #118 is a tuning size and not the stock jet for every model.\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":51138621767737,"sku":"TT-26441","price":4.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/main-jet-118-for-si-carbs-1.jpg?v=1794376426","url":"https:\/\/www.trendtimes.com\/products\/main-jet-118-for-si-carbs-for-scooters-mopeds","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}