{"product_id":"goirtutss-15mm-carburetor-upgrade-kit-for-33-52cc-2-stroke-engines-red-carb-adapter-stack-air-filter","title":"GOIRTUTSS 15mm Carburetor Upgrade Kit for 33–52cc 2-Stroke Engines — Red carb, adapter stack \u0026 air filter","description":"\u003cstrong\u003eHigh-flow 15mm carburetor upgrade kit that replaces stock carbs on many 2-stroke 33–52cc engines to improve throttle response and fitment.\u003c\/strong\u003e\n\nThis GOIRTUTSS kit includes a 15mm venturi carburetor plus the adapters and air filter needed to swap into stand-up scooters, mini bikes, pocket bikes, ATVs and a variety of small 2-stroke equipment. It’s designed to match common China-made 33–52cc 2-stroke engines and comes with manifold pieces and an adapter stack so you can install with minimal modification. The bright red carb body makes identifying the upgrade easy, while the included parts help ensure compatibility across several mounts and intake flange types.\n\n\u003ch3\u003eWill this carburetor fit my 33–52cc 2-stroke engine?\u003c\/h3\u003e\n\u003cp\u003eThe GOIRTUTSS 15mm carburetor is made to cover a wide range of small 2-stroke engines from 33cc up to 52cc. Fitment depends on manifold bolt spacing and intake bore size; this kit supplies an adapter stack and manifold to bridge common configurations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVenturi diameter: 15mm — suited for 33–52cc 2-strokes\u003c\/li\u003e\n  \u003cli\u003eMounting hole center spacing: 31.5mm for common flanges\u003c\/li\u003e\n  \u003cli\u003eIncludes adapter stack and manifold for multiple intake types\u003c\/li\u003e\n  \u003cli\u003eCompatible with many China scooters and small engines (X1, X2, X3, X7, Bladez, Keyang)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this upgrade affect performance and throttle feel?\u003c\/h3\u003e\n\u003cp\u003eUpgrading to a properly sized 15mm carb can improve throttle responsiveness and allow the engine to breathe more efficiently at mid-range RPMs. Results will vary by engine condition, exhaust, and jetting—expect crisper pick-up rather than dramatic horsepower gains without further tuning.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFaster throttle response thanks to increased airflow through a 15mm venturi\u003c\/li\u003e\n  \u003cli\u003eBetter mid-range torque potential with correct jetting\u003c\/li\u003e\n  \u003cli\u003eRequires rejetting to optimize fuel\/air mixture for your setup\u003c\/li\u003e\n  \u003cli\u003eImproved consistency over worn OEM carbs on many small engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and what tools or parts will I still need?\u003c\/h3\u003e\n\u003cp\u003eThe kit ships with the carburetor, an air filter, a manifold, an adapter stack set, and a novelty bottle opener. You’ll often need basic hand tools and possibly new gaskets, fuel lines, or custom manifold hardware to finish the installation cleanly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 1 carburetor, 1 air filter, 1 manifold, 1 adapter stack set, 1 bottle opener\u003c\/li\u003e\n  \u003cli\u003eRecommended tools: screwdrivers, wrenches, pliers, carb cleaner\u003c\/li\u003e\n  \u003cli\u003eMay need new intake gaskets, clamps, or fuel hose for leak-free sealing\u003c\/li\u003e\n  \u003cli\u003ePlan to rejet or adjust pilot\/high-speed screws after install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I maintain and tune this carb for longevity?\u003c\/h3\u003e\n\u003cp\u003eRegular maintenance keeps small carburetors performing reliably—clean the jets and float bowl periodically, run fuel stabilizer when storing, and check the air filter for dirt. After any jetting changes, test at low and high throttle to confirm a smooth transition across the rev range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect and clean jets and float bowl every season or after long storage\u003c\/li\u003e\n  \u003cli\u003eReplace the air filter if clogged to prevent lean running and wear\u003c\/li\u003e\n  \u003cli\u003eUse fresh, correctly mixed 2-stroke fuel and a fuel filter in-line\u003c\/li\u003e\n  \u003cli\u003eRejet and fine-tune pilot\/high screws after installation for best performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for?\n\nThis GOIRTUTSS 15mm carburetor upgrade kit is intended for DIY mechanics, small-engine hobbyists, and riders who want a reliable replacement or modest performance improvement for 33–52cc 2-stroke scooters, mini bikes, pocket bikes, and similar machines. It’s useful when your existing carb is worn, when you need a different venturi size, or when adapting a common China-made engine to aftermarket intake hardware. If you prefer bolt-on changes without major fabrication, the included adapters and manifold pieces simplify fitting to many stock setups.\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 carb fit a 49cc pocket bike?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the 15mm GOIRTUTSS carb fits many 49cc 2-stroke pocket bikes if the mounting spacing and intake match; use the adapter stack if needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will I need to rejet after installing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Usually yes—rejetting or adjusting pilot\/high screws is recommended to match your engine, exhaust, and altitude for safe running.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GOIRTUTSS","offers":[{"title":"Default Title","offer_id":48085535686814,"sku":"B0BV5SPSQ6","price":36.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/goirtutss-15mm-carburetor-front-view.jpg?v=1785871926","url":"https:\/\/northtrailauto.ca\/products\/goirtutss-15mm-carburetor-upgrade-kit-for-33-52cc-2-stroke-engines-red-carb-adapter-stack-air-filter","provider":"North Trail Auto","version":"1.0","type":"link"}