{"title":"Carburetor Jets","description":"","products":[{"product_id":"carburetor-needle","title":"Universal Parts Adjustable Needle Jet 5-Clip | QMB139 50cc","description":"\u003cp\u003eReplace a worn or damaged needle jet on your QMB139 50cc 4-stroke scooter with this \u003cstrong\u003eUniversal Parts Adjustable Needle Jet\u003c\/strong\u003e. This stainless steel needle jet features a tapered tip, cylindrical body, and 5 adjustment grooves for fine-tuning the air\/fuel mixture across the throttle range. Includes a C-clip pre-installed in the middle (3rd) groove position. Raising the clip leans the mixture; lowering it richens it.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e38mm stainless steel adjustable needle jet with tapered tip for precise fuel metering\u003c\/li\u003e\n\u003cli\u003e5 adjustment grooves for fine-tuning air\/fuel mixture — raise clip to lean, lower to richen\u003c\/li\u003e\n\u003cli\u003eC-clip included, pre-installed in middle (3rd) groove position\u003c\/li\u003e\n\u003cli\u003eFits QMB139 \/ 139QMB 50cc 4-stroke carburetors and all QM\/FM engine code variants\u003c\/li\u003e\n\u003cli\u003eDirect replacement for worn or damaged OEM needle jet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLength: 38mm\u003c\/li\u003e\n\u003cli\u003eClip Positions: 5 grooves\u003c\/li\u003e\n\u003cli\u003eIncludes: C-clip (pre-installed, middle position)\u003c\/li\u003e\n\u003cli\u003eMaterial: Stainless steel\u003c\/li\u003e\n\u003cli\u003eEngine: QMB139 \/ 139QMB 50cc 4-stroke\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEngine Compatibility\u003c\/h3\u003e\u003cp\u003eFits QMB139-based 50cc \/ 80cc engines with the following engine codes:\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e139QMA\u003c\/td\u003e\n\u003ctd\u003e139QMB\u003c\/td\u003e\n\u003ctd\u003e1P39QMB\u003c\/td\u003e\n\u003ctd\u003e1P39QMA-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYN139QMB\u003c\/td\u003e\n\u003ctd\u003eJJ1P39QMB\u003c\/td\u003e\n\u003ctd\u003e139FMA-2\u003c\/td\u003e\n\u003ctd\u003eBD1P39QMB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBN139QMB\u003c\/td\u003e\n\u003ctd\u003e147QMD\u003c\/td\u003e\n\u003ctd\u003eOther QMA models\u003c\/td\u003e\n\u003ctd\u003eOther QMB models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cem\u003eDon’t see your engine listed? If the engine code includes “QM” or “FM”, this needle jet is likely compatible with your carburetor.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eCalifornia Prop 65 Warning: www.p65warnings.ca.gov\u003c\/p\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003eQMB139 \/ 139QMB 50cc 4-stroke engines: 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, and other QMA\/QMB variants. Any engine code containing QM or FM is likely compatible.\u003c\/p\u003e","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":67964515942721,"sku":"151-181","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/450523_63ba8a27-b20f-4608-9b5d-1aa21b184848.jpg?v=1792945417"},{"product_id":"main-jet-98-si-carbs","title":"Tutti Ricambi SI Carburetor Main Jets","description":"\u003cp\u003eSelect the jet size for this Tutti Ricambi SI Carburetor Main jet. Check the selected SKU and its details against your original carburetor before ordering.\u003c\/p\u003e","brand":"Tutti Ricambi","offers":[{"title":"98","offer_id":67964526592321,"sku":"87913","price":6.0,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":68094503944513,"sku":"89145","price":6.0,"currency_code":"USD","in_stock":true},{"title":"112","offer_id":68094503977281,"sku":"98051","price":4.0,"currency_code":"USD","in_stock":true},{"title":"118","offer_id":68094504010049,"sku":"132368","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/87913_2bb1041b-26fc-4013-96e3-9767c246d73d.jpg?v=1792793711"},{"product_id":"jet-air-120-si","title":"Jet, Air #120 - SI","description":"Air jet: This is the top of the stack, and the part that has a slot for a screwdriver. The hole that goes through it allows air into the jet to pre-mix with the fuel in the atomizer. These are available in 120, 160, and 185 sizes. The larger the number, the more air will flow through.\n\n\u003cp\u003e\n\nJetting is something that takes trial and error. \u003c\/p\u003e","brand":"Spaco","offers":[{"title":"Default Title","offer_id":67964531016001,"sku":"150167","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-5755-0-150167_7e2eb07c-3851-4e66-a00c-d729272050be.jpg?v=1792557769"},{"product_id":"main-jet-82-si-carbs","title":"Spaco SI Carburetor Main Jets","description":"\u003cp\u003eSelect the jet size for this Spaco SI Carburetor Main jet. Check the selected SKU and its details against your original carburetor before ordering.\u003c\/p\u003e","brand":"Spaco","offers":[{"title":"82","offer_id":67964531409217,"sku":"87335","price":5.0,"currency_code":"USD","in_stock":true},{"title":"84","offer_id":68094483169601,"sku":"114590","price":5.0,"currency_code":"USD","in_stock":true},{"title":"86","offer_id":68094483202369,"sku":"86755","price":5.0,"currency_code":"USD","in_stock":true},{"title":"88","offer_id":68094483235137,"sku":"150474","price":5.0,"currency_code":"USD","in_stock":true},{"title":"91","offer_id":68094483267905,"sku":"87113","price":5.0,"currency_code":"USD","in_stock":true},{"title":"93","offer_id":68094483300673,"sku":"85300","price":5.0,"currency_code":"USD","in_stock":true},{"title":"95","offer_id":68094483333441,"sku":"86948","price":5.0,"currency_code":"USD","in_stock":true},{"title":"96","offer_id":68094483366209,"sku":"86947","price":5.0,"currency_code":"USD","in_stock":true},{"title":"99","offer_id":68094483398977,"sku":"195146","price":5.0,"currency_code":"USD","in_stock":true},{"title":"105","offer_id":68094483431745,"sku":"94089","price":5.0,"currency_code":"USD","in_stock":true},{"title":"107","offer_id":68094483464513,"sku":"122691","price":5.0,"currency_code":"USD","in_stock":true},{"title":"110","offer_id":68094483497281,"sku":"98050","price":5.0,"currency_code":"USD","in_stock":true},{"title":"116","offer_id":68094483530049,"sku":"132453","price":5.0,"currency_code":"USD","in_stock":true},{"title":"130","offer_id":68094483562817,"sku":"150531","price":5.0,"currency_code":"USD","in_stock":true},{"title":"135","offer_id":68094483595585,"sku":"150536","price":5.0,"currency_code":"USD","in_stock":true},{"title":"140","offer_id":68094483628353,"sku":"150537","price":5.0,"currency_code":"USD","in_stock":true},{"title":"150","offer_id":68094483661121,"sku":"150539","price":5.0,"currency_code":"USD","in_stock":true},{"title":"155","offer_id":68094483693889,"sku":"150542","price":5.0,"currency_code":"USD","in_stock":true},{"title":"160","offer_id":68094483726657,"sku":"150543","price":5.0,"currency_code":"USD","in_stock":true},{"title":"165","offer_id":68094483759425,"sku":"150544","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-5373-0-87335_a77cf7d1-f311-4cf1-9c4b-f0133e176698.jpg?v=1792557770"},{"product_id":"idle-jet-38-120-si-carbs","title":"Spaco SI Carburetor Idle Jet","description":"\u003cp\u003eSpaco SI Carburetor Idle Jet.\u003c\/p\u003e\u003cp\u003eSelect an option to view its SKU and product information.\u003c\/p\u003e","brand":"Spaco","offers":[{"title":"38\/120","offer_id":67964531474753,"sku":"191884","price":6.0,"currency_code":"USD","in_stock":true},{"title":"50\/120","offer_id":68017371316545,"sku":"183353","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-5881-0-191884_eb80fcc9-c2a7-4eaf-956a-0b261cb4d9d0.jpg?v=1792557770"},{"product_id":"jet-keihin-pb-style-carburetors-genuine-magento-6002","title":"Keihin Style 4mm Main Jet - PB PAB CVK Carburetors","description":"\u003cp\u003eFine-tune your air-fuel ratio with these high-precision Keihin Small Round 4mm Main Jets. Designed for Keihin PB, PAB, and CVK series carburetors, these are the standard jet for optimizing performance after installing a big-bore kit, exhaust, or high-flow air filter. The M4x0.70 thread and 5mm round head match the Keihin 99101-116 style used across a wide range of 50cc–150cc scooters. Available in 15 sizes from #75 to #130 — select your size from the variant dropdown.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e These are Keihin \"Small Round\" (99101-116) style jets. Not compatible with Keihin \"Large Round\" (99101-393) or \"Hex\" (99101-357) styles. Verify your jet dimensions before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eJetting tip:\u003c\/strong\u003e Always start with a larger jet than you think you need and work down. Running too lean can cause engine overheating and permanent damage. \u003c\/p\u003e","brand":"Universal Parts","offers":[{"title":"#75","offer_id":67964533375297,"sku":"JETKH1    75","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#80","offer_id":67992337580353,"sku":"JETKH1    80","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#85","offer_id":67992337613121,"sku":"JETKH1    85","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#90","offer_id":67992337645889,"sku":"JETKH1    90","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#95","offer_id":67992337678657,"sku":"JETKH1    95","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#98","offer_id":67992337711425,"sku":"JETKH1    98","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#100","offer_id":67992337744193,"sku":"JETKH1    100","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#102","offer_id":67992337776961,"sku":"JETKH1    102","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#105","offer_id":67992337809729,"sku":"JETKH1    105","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#110","offer_id":67992337842497,"sku":"JETKH1    110","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#115","offer_id":67992337875265,"sku":"JETKH1    115","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#120","offer_id":67992337908033,"sku":"JETKH1    120","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#125","offer_id":67992337940801,"sku":"JETKH1    125","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#128","offer_id":67992337973569,"sku":"JETKH1    128","price":6.0,"currency_code":"USD","in_stock":true},{"title":"#130","offer_id":68028384379201,"sku":"JETKH1    130","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/58CA14B5-829B-4CA6-BF18-FF3FCD7E6CA1.png?v=1792798900"},{"product_id":"dellorto-jet-80-6mm-shb-phbe-phbh-phbl-phbn","title":"Spaco Dellorto 6mm Main Jets — SHB \/ PHB Series","description":"\u003cp\u003eSelect the jet size for this Spaco Dellorto 6mm Main Jets — SHB \/ PHB Series. Check the selected SKU and its details against your original carburetor before ordering.\u003c\/p\u003e","brand":"Spaco","offers":[{"title":"80","offer_id":67964533735745,"sku":"JPHB80","price":6.0,"currency_code":"USD","in_stock":true},{"title":"85","offer_id":68094496178497,"sku":"JPHB85","price":6.0,"currency_code":"USD","in_stock":false},{"title":"90","offer_id":68094496211265,"sku":"JPHB90","price":6.0,"currency_code":"USD","in_stock":false},{"title":"95","offer_id":68094496244033,"sku":"JPHB95","price":6.0,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":68094496276801,"sku":"JPHB100","price":6.0,"currency_code":"USD","in_stock":true},{"title":"105","offer_id":68094496309569,"sku":"JPHB105","price":6.0,"currency_code":"USD","in_stock":true},{"title":"110","offer_id":68094496342337,"sku":"JPHB110","price":6.0,"currency_code":"USD","in_stock":true},{"title":"115","offer_id":68094496375105,"sku":"JPHB115","price":6.0,"currency_code":"USD","in_stock":true},{"title":"120","offer_id":68094496407873,"sku":"JPHB120","price":6.0,"currency_code":"USD","in_stock":true},{"title":"130","offer_id":68094496440641,"sku":"JPHB130","price":6.0,"currency_code":"USD","in_stock":true},{"title":"135","offer_id":68094496473409,"sku":"JPHB135","price":6.0,"currency_code":"USD","in_stock":true},{"title":"140","offer_id":68094496506177,"sku":"JPHB140","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-6233-0-JPHB80_a98bdc0a-da9a-4e07-b39b-6bd8ae8671d1.jpg?v=1792557772"},{"product_id":"jet-air-160-si","title":"Tutti Ricambi #160 Air Jet - Dellorto SI Carburetors","description":"\u003cp\u003eThis \u003cstrong\u003eTutti Ricambi #160 air jet\u003c\/strong\u003e helps you fine-tune the air entering the main jet stack of a compatible Dellorto or Spaco SI carburetor. Positioned above the atomizer, this air-correction jet admits air that mixes with fuel before it reaches the engine. Its threaded end and slotted head make it a practical replacement or tuning component for your vintage Vespa or Stella's matching SI setup.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e#160 calibration:\u003c\/strong\u003e Provides the 160-size air-correction option for a compatible SI jet stack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop-of-stack position:\u003c\/strong\u003e Installs above the atomizer rather than replacing the fuel main jet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlotted head:\u003c\/strong\u003e Accepts a flat-blade screwdriver for installation and removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreaded fitting:\u003c\/strong\u003e Screws into the matching SI carburetor jet-stack location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTuning flexibility:\u003c\/strong\u003e Lets you adjust air correction as part of a coordinated main-jet and atomizer setup.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Tutti Ricambi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 150049\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Air-correction jet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJet size:\u003c\/strong\u003e #160\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor application:\u003c\/strong\u003e Compatible Dellorto SI and Spaco SI carburetors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Top of the main jet stack, above the atomizer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead:\u003c\/strong\u003e Slotted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One air jet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake \/ family\u003c\/th\u003e\n\u003cth\u003eModels \/ frame codes\u003c\/th\u003e\n\u003cth\u003eRequirement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGenuine\u003c\/td\u003e\n\u003ctd\u003eStella 150 2T\u003c\/td\u003e\n\u003ctd\u003eMatching SI carburetor and jet stack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVespa vintage largeframe\u003c\/td\u003e\n\u003ctd\u003eVNL GT\/GTR; VLB Sprint; VSC SS 180; VNC 125 Super; VBA; VBB; VBC 150 Super; VSD Rally 180; VNB; VSB GS 160; VSE Rally 200; VLA GL150\u003c\/td\u003e\n\u003ctd\u003eMatching SI carburetor and jet stack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVespa P\/PX\u003c\/td\u003e\n\u003ctd\u003eVSX P\/PX 200 E; VLX P\/PX 150; VNX P\/PX 125\u003c\/td\u003e\n\u003ctd\u003eMatching SI carburetor and jet stack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eConfirm the carburetor type and existing jet-stack configuration before ordering, especially on scooters with carburetor conversions. Model name alone does not determine the correct jet calibration.\u003c\/p\u003e\u003cp\u003eWithin this air-jet family, a larger size number allows more air through; it does not indicate greater fuel flow. Choose the air jet together with the main jet and atomizer, then check and adjust the complete setup for your engine. The air-jet range also includes 120 and 185 sizes, sold separately. \u003c\/p\u003e","brand":"Tutti Ricambi","offers":[{"title":"Default Title","offer_id":67964533997889,"sku":"150049","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-5760-0-150049_34899f1e-e02a-48d9-a569-554e69463af5.jpg?v=1792557773"},{"product_id":"idle-jet-42-160-si-carbs","title":"Idle Jet (42\/160); SI Carbs","description":"\u003cp\u003eThis is the smaller jet that screws in next to the main jet stack. It regulates fuel\/air mixture at the bottom 1\/3 of the throttle. A combination of the idle jet and the main jet handle the middle 1\/3.\u003c\/p\u003e\n\n\u003cp\u003eIf your idle jet is too big or too small, it can create a flat spot in the acceleration. Idle jets have two numbers. The first number is the size of the bore that allows fuel in, and the second is the size that allows air in. Available sizes are: 38\/120, 42\/160, 45\/120, 45\/140, 48\/160, 50\/120, 55\/160. So a 45\/120 jet would run richer than a 45\/140, because the 120 allows less air to pass. To make things more complicated, some vintage Vespas came with plugged idle jets, which have no air hole. These are available in sizes 42 and 50.\u003c\/p\u003e\n\n\u003cp\u003eJetting is something that takes trial and error. \u003c\/p\u003e","brand":"Mec Eur","offers":[{"title":"Default Title","offer_id":67964539699521,"sku":"183238","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-5851-0-183238_75a4e535-7590-4faa-8a24-e84c597cd307.jpg?v=1792557780"},{"product_id":"main-jet-103-si-carbs","title":"Mec Eur SI Carburetor Main Jets","description":"\u003cp\u003eSelect the jet size for this Mec Eur SI Carburetor Main jet. 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Check the selected SKU and its details against your original carburetor before ordering.\u003c\/p\u003e","brand":"Polini","offers":[{"title":"#100–118 — Even sizes","offer_id":67964633383233,"sku":"1300-1146","price":65.0,"currency_code":"USD","in_stock":true},{"title":"#120–138 — Even sizes","offer_id":68094512202049,"sku":"1300-1143","price":65.0,"currency_code":"USD","in_stock":false},{"title":"#140–158 — Even sizes","offer_id":68017227104577,"sku":"1300-1144","price":65.0,"currency_code":"USD","in_stock":true},{"title":"#160–178 — Even sizes","offer_id":68017227137345,"sku":"1300-1145","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-9483-0-1300-1146_1950dfa0-6c40-4b4f-a6ab-931c47fd2b0f.jpg?v=1792558024"},{"product_id":"prima-cvk-main-jet-kit-5mm-10-pieces-gy6-150","title":"Prima 5mm CVK Carburetor Main Jet Kit - 10 Pieces","description":"\u003cp\u003ePrima's 5mm main jet kit for GY6 and CN250 CVK carbs includes jets in 10 different sizes: #100, #105, #108, #110, #113, #115, #120, #125, #130 and #140.\u003c\/p\u003e\u003cp\u003eJetting is something that takes trial and error. \u003c\/p\u003e\u003cp\u003eOriginal Parts For Scooters SKU 114-38-45\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e10-piece set of 5mm main jets\u003c\/li\u003e\n\u003cli\u003eKeihin round-style jet profile for compatible CVK carburetors\u003c\/li\u003e\n\u003cli\u003eIncludes sizes #100, #105, #108, #110, #113, #115, #120, #125, #130, and #140\u003c\/li\u003e\n\u003cli\u003eSupports fuel-mixture tuning across a range of engine and intake setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eKeihin round-style main jet\u003c\/li\u003e\n\u003cli\u003eThread size: M5x0.80\u003c\/li\u003e\n\u003cli\u003eOverall Length: 8mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePackaging may vary from product photos\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e157QMJ-based 125cc \/ 150cc \/ 169cc engines with the following engine codes:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e157QMJ\u003c\/td\u003e\n\u003ctd\u003e161QMK\u003c\/td\u003e\n\u003ctd\u003e152QMI\u003c\/td\u003e\n\u003ctd\u003e1P61QMK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYN1P57QMJ\u003c\/td\u003e\n\u003ctd\u003e1P52FMI\u003c\/td\u003e\n\u003ctd\u003e154FMI\u003c\/td\u003e\n\u003ctd\u003eJJ157QMJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1P57QMJ\u003c\/td\u003e\n\u003ctd\u003eBN157QMJ\u003c\/td\u003e\n\u003ctd\u003eBN161QMK-A\u003c\/td\u003e\n\u003ctd\u003eOther QMJ, QMK, and QMI models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eDon't see your engine listed? If the engine code includes \"QM\" or \"FM\" and you're running a CVK carburetor, this product is compatible with your vehicle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout Prima:\u003c\/strong\u003e Prima is the industry leader in premium scooter accessories, service parts and scooterist protective apparel. Prima brand products are designed direct-fit for all popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, Royal Alloy and GY6 \/ QMB powered scooters. \u003c\/p\u003e","brand":"Prima","offers":[{"title":"Default Title","offer_id":67964633547073,"sku":"1300-1130","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-9425-0-1300-1130_0752c4fd-4aed-428f-8240-570add1c56ca.jpg?v=1792558024"},{"product_id":"prima-si-main-jet-kit-10-pcs-vintage-vespa-stella-2t","title":"Prima Main Jet Kit 10 pc - Dell'Orto \/ Spaco SI Carburetors","description":"\u003cp\u003eDial in your Dell'Orto or Spaco SI carburetor with this Prima 10-piece main jet kit. Ten brass conical main jets in a range of sizes, seated in a black foam tray inside a clear plastic storage case. Use when tuning for a new air filter, exhaust, cylinder kit, or elevation and season changes. 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The threaded brass jets come organized in a foam holder, so you can keep track of each size as you test your setup.\u003c\/p\u003e\u003cp\u003eThis product is intended for off-road use only. This product is not intended for use on public roads or land.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive tuning sizes:\u003c\/strong\u003e Includes 42, 44, 46, 49, and 52 pilot jets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-throttle adjustment:\u003c\/strong\u003e Provides pilot-circuit options for tuning idle and initial throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction:\u003c\/strong\u003e Threaded jets with slotted ends for installation and removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrganized storage:\u003c\/strong\u003e Foam holder keeps the five jets together between tuning changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor-based fitment:\u003c\/strong\u003e Intended for compatible PWK, OKO, and Keihin carburetors using the matching pilot-jet pattern.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Polini\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 1300-1139\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 343.0302\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e Pilot\/slow jet tuning kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 5 jets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJet sizes:\u003c\/strong\u003e 42, 44, 46, 49, 52\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Foam holder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompatible PWK, OKO, and Keihin carburetors that accept this pilot-jet pattern\u003c\/li\u003e\n\u003cli\u003eMatch the original jet's thread, overall length, and body profile before ordering; carburetor brand alone does not establish fitment\u003c\/li\u003e\n\u003cli\u003eSelect the final jet size for your engine, intake, exhaust, and operating conditions; the included sizes are tuning options, not a guaranteed setting for every setup\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eJetting takes careful testing. \u003c\/p\u003e","brand":"Polini","offers":[{"title":"Default Title","offer_id":67964637774145,"sku":"1300-1139","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-9615-0-1300-1139_8d883019-ea1f-47a0-978a-09c8415a5a0c.jpg?v=1792558029"},{"product_id":"naraku-5mm-jet-kit-sizes-50-68","title":"Naraku Dellorto M5 Main Jet Kits — Ten Jets","description":"\u003cp\u003eSelect the jet-size range for this ten-jet kit. Check the selected SKU and its details against your original carburetor before ordering.\u003c\/p\u003e","brand":"Naraku","offers":[{"title":"50–68","offer_id":67964645736769,"sku":"137-20","price":29.0,"currency_code":"USD","in_stock":true},{"title":"70–88","offer_id":68094513971521,"sku":"137-21","price":32.0,"currency_code":"USD","in_stock":false},{"title":"90–110","offer_id":68094514004289,"sku":"137-65","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-11252-0-137-20.main.01.default.jpg?v=1792558037"},{"product_id":"naraku-jet-kit-for-honda-spree-aero-50-and-sa50","title":"Naraku Jet Kit for Honda Spree, Aero 50 and SA50","description":"\u003cp\u003eNaraku Carburetor Jet Kit for Honda Spree, Aero 50, and SA50 stock carburetors and some mopeds with Gurtner Carburetors.\u003cbr\u003e\u003cbr\u003eThis 10-piece kit contains jet sizes 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, and 94. 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Prima's 10-piece 6mm Dellorto-style main jet kit gives you sizes #80 through #125 in five-size steps, ready for tuning a compatible Yamaha Zuma\/BWS50 2-stroke or another scooter running the same 6mm main jets. 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