{"product_id":"cvk-main-jet-150-for-scooters-mopeds","title":"Cvk Main Jet (# 150) for Scooters \u0026 Mopeds","description":"\u003ch2\u003eCvk Main Jet (#150) for 139QMB and GY6 Scooters\u003c\/h2\u003e\u003cp\u003eThe Cvk Main Jet (#150) suits a range of scooters and mopeds, with particular compatibility for 139QMB and GY6 models. It works with most CVK carburetors that have a 5mm main jet slot, so it can be a practical option for adjusting engine performance. You can find it among our \u003ca href=\"\/collections\/scooter-carburetors\"\u003ecarburetor and jet options\u003c\/a\u003e for fine-tuning how your scooter receives fuel. Changing this jet can noticeably affect throttle response and efficiency, which makes it worth considering for anyone keen on getting more from their scooter.\u003c\/p\u003e\u003ch3\u003eConstruction and Performance\u003c\/h3\u003e\u003cp\u003eThis main jet uses a Keihin round-style design, a format well regarded for dependable performance. It has an M5x0.80 thread and an overall length of 8mm, so it sits correctly in the carburetor and supports consistent fuel mixing and delivery. Correct jetting matters for getting the most from your engine, particularly after any modifications.\u003c\/p\u003e\u003ch3\u003eWhen to Replace Your Main Jet\u003c\/h3\u003e\u003cp\u003eConsider replacing your main jet if the engine hesitates, sputters, or accelerates poorly. Finding the right jetting often takes some trial and error, so you may need to test a few options before settling on the best match for your engine. Consulting guides for further detail can make this easier. Checking your jetting regularly helps keep the engine running well, especially after modifications or when seasons change.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Keihin round-style 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 engines with a 5mm main jet slot CVK\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e139QMB-based 50cc\/80cc engines (engine codes 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, other QMA and QMB models)\u003c\/li\u003e\n\u003cli\u003e157QMJ-based 125cc\/150cc\/169cc engines (engine codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, other QMJ, QMK and QMI models)\u003c\/li\u003e\n\u003cli\u003eAny engine code with QM or FM and a 5mm main jet slot CVK carburetor\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Confirm that your carburetor's main jet slot measures 5mm, then compare your engine code with the list above. This jet has an M5x0.80 thread and an overall length of 8mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/scooter-carburetors\"\u003eBrowse Scooter Carburetors \u0026amp; Jets\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eBrowse Scooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51138637430841,"sku":"TT-26485","price":3.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/cvk-main-jet-150-1.jpg?v=1794376488","url":"https:\/\/www.trendtimes.com\/products\/cvk-main-jet-150-for-scooters-mopeds","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}