{"product_id":"cvk-main-jet-135-for-scooters-mopeds","title":"Cvk Main Jet (# 135) for Scooters \u0026 Mopeds","description":"\u003ch2\u003eCvk Main Jet (#135) for 139QMB and GY6 Scooters\u003c\/h2\u003e\u003cp\u003eThis CVK main jet (#135) is made for 139QMB and GY6 scooters and works with a range of CVK carburetors that take a 5mm main jet. It plays a key role in controlling fuel flow, which affects engine performance and how well the scooter runs. You'll find it among our \u003ca href=\"\/collections\/scooter-carburetors\"\u003escooter carburetors \u0026amp; jets\u003c\/a\u003e. Getting the jetting right can take some tuning, so look through available guides for step-by-step setup advice.\u003c\/p\u003e\u003ch3\u003eBuild and Fit Details\u003c\/h3\u003e\u003cp\u003eThe main jet uses a Keihin round design and has an M5x0.80 thread. It measures 8mm overall, which lets it seat securely in compatible carburetors. It works with several engine codes, so it suits a number of scooter models.\u003c\/p\u003e\u003ch3\u003eSigns It May Need Replacing\u003c\/h3\u003e\u003cp\u003eIf your scooter accelerates sluggishly or the engine runs unevenly, it may be time to swap this main jet. Any changes made to your scooter or moped may also call for adjusting the jetting to keep performance where it should be.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Main Jet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M5x0.80\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 8mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 139QMB-based 50cc\/80cc GY6 engines and 157QMJ-based 125cc\/150cc\/169cc GY6 engines with a 5mm main jet slot\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD (50cc\/80cc engines)\u003c\/li\u003e\n\u003cli\u003eOther QMA and QMB models (50cc\/80cc engines)\u003c\/li\u003e\n\u003cli\u003e157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A (125cc\/150cc\/169cc engines)\u003c\/li\u003e\n\u003cli\u003eOther QMJ, QMK and QMI models (125cc\/150cc\/169cc engines)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Compare the engine code on your engine with the codes listed above, or confirm that your carburetor has a 5mm main jet slot and that the engine code includes QM or FM.\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":51138612494393,"sku":"TT-26421","price":3.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/cvk-main-jet-135-1.jpg?v=1794376395","url":"https:\/\/www.trendtimes.com\/products\/cvk-main-jet-135-for-scooters-mopeds","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}