{"product_id":"ygq-carburetor-jet-kit-for-mikuni-vm-tm-hsr-carburetors-42-piece-jet-assortment-main-pilot-jets","title":"YGQ Carburetor Jet Kit for Mikuni VM\/TM\/HSR Carburetors — 42‑Piece Jet Assortment, Main \u0026 Pilot Jets","description":"\u003cp\u003e\u003cstrong\u003eYGQ's 42-piece carburetor jet kit supplies a wide range of precision main and pilot jets designed to tune Mikuni VM, TM, HSR and related carburetors for improved throttle response and fuel metering.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit gathers commonly needed metering jets and pilot slow jets in one organized assortment so mechanics, tuners and DIY riders can quickly match jetting to altitude, fuel quality, or engine mods. It covers multiple Mikuni families — VM round and smoothbore, TM flat-slide, HSR and HS series — and fits many popular motorcycle, ATV and off‑road platforms from Honda, Yamaha, Suzuki, Kawasaki and Polaris. The set includes both large round and hex main jets plus two pilot jet series so you can refine both high- and low-speed fueling.\u003c\/p\u003e\n\n\u003ch3\u003eWhich jet sizes are included and why they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains a broad spread of main jet diameters and two pilot slow jet ranges so you can adjust for lean or rich conditions across the RPM band. Main jets control high‑fuel flow (top-end performance), while pilot jets tune idle and low‑throttle response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLarge round main jets: 90, 100, 110, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 190.\u003c\/li\u003e\n  \u003cli\u003eLarge hex main jets: 130, 140, 150, 160, 170, 180, 200, 220, 240, 260, 280.\u003c\/li\u003e\n  \u003cli\u003eTM pilot slow sizes: 17.5, 20, 25, 30, 35, 40.\u003c\/li\u003e\n  \u003cli\u003eVM pilot slow sizes: 25, 30, 35, 40, 45, 50, 55, 60.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich carburetors and needle jets is this kit compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis assortment is built to fit many Mikuni models — both round and flat slide designs — and it matches several needle jet series used across those carbs. That makes it convenient when swapping jets across different applications or when upgrading components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible carbs: VM16–VM44 series, VM18, VM20, VM22, VM24, VM26, VM28, VM30, VM32, VM34, VM36, VM38, VM44.\u003c\/li\u003e\n  \u003cli\u003eAlso fits many TM24–TMX family carbs, HS\/HSR\/HSR42\/HSR45, RS34–RS40 and select flat slide models.\u003c\/li\u003e\n  \u003cli\u003eCompatible needle jet series include 171, 188, 196 (with large round), and 568, 640, 723.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit work on my motorcycle, ATV or off‑road machine?\u003c\/h3\u003e\n\u003cp\u003eIf your vehicle uses Mikuni VM\/TM\/HSR-style carburetors or equivalent replacement units, this kit will cover most common tuning needs for 2‑stroke and 4‑stroke engines. It’s intended for riders who need flexible jetting options without sourcing individual jets separately.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon installs: Honda, Yamaha, Suzuki, Kawasaki and Polaris models with compatible Mikuni carbs.\u003c\/li\u003e\n  \u003cli\u003eApplications: street bikes, dirt bikes, ATVs, UTVs and other off‑road machines requiring precise jet selection.\u003c\/li\u003e\n  \u003cli\u003eUseful for: altitude changes, fuel grade variations, performance upgrades, and troubleshooting poor pilot\/high‑end mixture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use the kit to optimize jetting safely?\u003c\/h3\u003e\n\u003cp\u003eStart with the factory-recommended jet or a known baseline, then change one jet at a time and test under controlled conditions. Keep a log of jet sizes and results; small incremental steps prevent over‑fueling or running too lean.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBegin at idle and part throttle to dial pilot jets, then move to main jet trials for full-throttle tuning.\u003c\/li\u003e\n  \u003cli\u003eRecord conditions (altitude, temperature, fuel) to reproduce successful settings later.\u003c\/li\u003e\n  \u003cli\u003eUse a clean workspace and magnetic tray to avoid losing tiny jets during swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The YGQ 42-piece Mikuni jet kit is built for mechanics, race teams, hobby tuners and weekend riders who need a comprehensive, cost-effective selection of main and pilot jets. If you own or service bikes and ATVs with Mikuni VM\/TM\/HSR carburetors or similar units, this set simplifies finding the correct jetting for performance tuning, fuel‑quality adjustments, and seasonal or altitude changes.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit Mikuni VM22 and VM28 carburetors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit lists VM22 and VM28 compatibility and includes pilot and main jets sized for those carburetors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are needle jets included or compatible?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The set includes main and pilot jets and is compatible with needle jet series 171, 188, 196, 568, 640 and 723.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YGQ","offers":[{"title":"Default Title","offer_id":48087105339550,"sku":"B0DFPGTW9P","price":33.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ygq-kit-front-layout.jpg?v=1785916553","url":"https:\/\/northtrailauto.ca\/products\/ygq-carburetor-jet-kit-for-mikuni-vm-tm-hsr-carburetors-42-piece-jet-assortment-main-pilot-jets","provider":"North Trail Auto","version":"1.0","type":"link"}