{"product_id":"keihin-round-style-cvk-main-jet-for-m4-x-0-70-for-scooters-mopeds","title":"Keihin Round-Style CVK Main Jet for M4 x 0.70 for Scooters \u0026 Mopeds","description":"\u003ch2\u003eKeihin CVK Main Jet for QMB139 50cc Scooters\u003c\/h2\u003e\u003cp\u003eThis round-style Keihin CVK main jet is made for QMB139 50cc 4-stroke scooters and mopeds. It comes in sizes #70 through #140, so you can adjust fuel flow to suit your engine. It is one of the core \u003ca href=\"\/collections\/scooter-carburetors\"\u003ecarburetor and jet options\u003c\/a\u003e used to meter fuel accurately, whether the engine is stock or modified for particular riding conditions. Pick your size from the dropdown menu before adding it to your cart.\u003c\/p\u003e\u003ch3\u003eBuild and Layout\u003c\/h3\u003e\u003cp\u003eThis jet has a round profile, a hex body, and a flat-head slot, which makes it simple to fit. It is brass, so it holds up well and resists wear over the long term. The thread is M4 x 0.70 and the overall length is 7.2mm, giving a snug fit in compatible carburetors and supporting steady engine running.\u003c\/p\u003e\u003ch3\u003eSigns It May Be Time to Swap the Main Jet\u003c\/h3\u003e\u003cp\u003eConsider replacing the main jet if the scooter starts running poorly, or if you need to make adjustments after riding at a different altitude. Changing the jet can improve fuel delivery and help the engine run more efficiently. Checking this part on a regular basis also helps keep the scooter running well for longer.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e #70 – #140\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M4 x 0.70\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 7.2mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e QMB139 \/ 139QMB 49cc and 50cc 4-stroke CVK carburetors, Honda Dio 50 and Honda Elite 50\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eCompatible with:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eQMB139 \/ 139QMB 49cc and 50cc 4-stroke CVK carburetors\u003c\/li\u003e\n\u003cli\u003eHonda Dio 50\u003c\/li\u003e\n\u003cli\u003eHonda Elite 50\u003c\/li\u003e\n\u003cli\u003eMost Chinese-built scooters and mopeds with CVK-style carburetors\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChoosing a size:\u003c\/strong\u003e Start with the jet number that matches your carburetor's stock setting, or select a size between #70 and #140 if you plan to tune the fuel mixture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBrowse related parts:\u003c\/strong\u003e \u003ca href=\"\/collections\/scooter-carburetors\"\u003eCarburetors \u0026amp; Jets for Scooters\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eAll Scooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"89","offer_id":51135925223481,"sku":"TT-16768","price":3.04,"currency_code":"USD","in_stock":true},{"title":"79","offer_id":51135925256249,"sku":"TT-16769","price":3.04,"currency_code":"USD","in_stock":true},{"title":"84","offer_id":51135925289017,"sku":"TT-16770","price":3.04,"currency_code":"USD","in_stock":true},{"title":"96","offer_id":51135925321785,"sku":"TT-16771","price":3.04,"currency_code":"USD","in_stock":true},{"title":"130","offer_id":51135925354553,"sku":"TT-16772","price":3.04,"currency_code":"USD","in_stock":true},{"title":"81","offer_id":51135925387321,"sku":"TT-16773","price":3.04,"currency_code":"USD","in_stock":true},{"title":"88","offer_id":51135925420089,"sku":"TT-16774","price":3.58,"currency_code":"USD","in_stock":true},{"title":"78","offer_id":51135925452857,"sku":"TT-16775","price":3.58,"currency_code":"USD","in_stock":true},{"title":"140","offer_id":51135925485625,"sku":"TT-16776","price":3.04,"currency_code":"USD","in_stock":true},{"title":"83","offer_id":51135925518393,"sku":"TT-16777","price":3.04,"currency_code":"USD","in_stock":true},{"title":"86","offer_id":51135925551161,"sku":"TT-16778","price":3.04,"currency_code":"USD","in_stock":true},{"title":"72","offer_id":51135925583929,"sku":"TT-16779","price":3.04,"currency_code":"USD","in_stock":true},{"title":"74","offer_id":51135925616697,"sku":"TT-16780","price":3.04,"currency_code":"USD","in_stock":true},{"title":"94","offer_id":51135925649465,"sku":"TT-16781","price":3.04,"currency_code":"USD","in_stock":true},{"title":"92","offer_id":51135925682233,"sku":"TT-16782","price":3.04,"currency_code":"USD","in_stock":true},{"title":"73","offer_id":51135925715001,"sku":"TT-16783","price":3.04,"currency_code":"USD","in_stock":true},{"title":"93","offer_id":51135925747769,"sku":"TT-16784","price":3.04,"currency_code":"USD","in_stock":true},{"title":"70","offer_id":51135925780537,"sku":"TT-16785","price":3.04,"currency_code":"USD","in_stock":true},{"title":"77","offer_id":51135925813305,"sku":"TT-16786","price":3.04,"currency_code":"USD","in_stock":true},{"title":"82","offer_id":51135925846073,"sku":"TT-16787","price":3.58,"currency_code":"USD","in_stock":true},{"title":"87","offer_id":51135925878841,"sku":"TT-16788","price":3.04,"currency_code":"USD","in_stock":true},{"title":"91","offer_id":51135925911609,"sku":"TT-16789","price":3.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/keihin-round-style-cvk-main-jet-for-m4-x-0-70-1.jpg?v=1794350103","url":"https:\/\/www.trendtimes.com\/products\/keihin-round-style-cvk-main-jet-for-m4-x-0-70-for-scooters-mopeds","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}