{"product_id":"nibbi-24mm-pe-carburetor-kit-for-140-150cc-dirt-bikes-atvs-48mm-flange-tunable-jets","title":"nibbi 24mm PE Carburetor Kit for 140–150cc Dirt Bikes \u0026 ATVs — 48mm Flange, Tunable Jets","description":"\u003cp\u003e\u003cstrong\u003eNIBBI's PE24mm carburetor kit is a complete 24mm flange replacement designed to deliver precise fuel metering and reliable fitment for 140cc–150cc dirt bikes, pit bikes, ATVs and 4-wheelers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis high-strength aluminum carburetor assembly is built to replace worn or damaged stock carbs on popular small-displacement motorcycle engines. It ships pre-fitted with tuning jets and includes spare jets so you can dial fuel delivery for elevation, riding style, or aftermarket exhausts. The kit’s leak-reduction features and easy two-bolt flange installation make it a practical upgrade for riders who want predictable throttle response without complicated rework.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the NIBBI PE24mm kit improve throttle response?\u003c\/h3\u003e\n\u003cp\u003eThe carburetor uses a high-hardness oil needle plunger and a hollow float to maintain consistent fuel flow into the venturi, which reduces hesitation and uneven throttle transitions. The horn-shaped intake helps smooth airflow into the engine for crisper midrange and top-end response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-hardness needle plunger for stable fuel cut-off\u003c\/li\u003e\n  \u003cli\u003eHollow oil float to reduce fuel starvation under acceleration\u003c\/li\u003e\n  \u003cli\u003eHorn-shaped intake for improved air velocity and smoother throttle\u003c\/li\u003e\n  \u003cli\u003ePre-installed #112 main jet and #40 slow jet for balanced baseline tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat jets are included and how do I tune them?\u003c\/h3\u003e\n\u003cp\u003eOut of the box the carburetor comes with a #112 main jet and a #40 slow jet, plus three extra main jets (#108, #110, #115) and one spare slow jet (#35). Swapping jets changes fuel volume for different conditions—use smaller numbers for leaner mixtures and larger numbers for richer mixtures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded jets: #112 main, #40 slow (pre-installed)\u003c\/li\u003e\n  \u003cli\u003eExtra mains: #108, #110, #115 for rich\/lean adjustments\u003c\/li\u003e\n  \u003cli\u003eReplacement slow jet: #35 for fine idle\/low-throttle tuning\u003c\/li\u003e\n  \u003cli\u003eAdjust jets incrementally and test under real riding conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this carburetor fit my motorcycle or ATV?\u003c\/h3\u003e\n\u003cp\u003eThe flange is engineered to match common 140–150cc engines and many popular brands such as Yamaha, Honda, Suzuki and Kawasaki. Confirm fit by comparing your old carburetor’s two-bolt flange spacing (48mm) and overall shape to the product images before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlange two-hole distance: 48mm — verify before purchase\u003c\/li\u003e\n  \u003cli\u003eDesigned for 140cc–150cc dirt\/pit bikes and small ATVs\u003c\/li\u003e\n  \u003cli\u003eWorks with many OEM intake manifolds sharing the PE24mm footprint\u003c\/li\u003e\n  \u003cli\u003eRefer to kit photos to confirm visual match with your existing carb\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic motorcycle maintenance: remove the old carb, match the flange and vacuum\/ throttle connections, then tighten the two mounting bolts. Routine maintenance consists of cleaning the jets and float bowl and checking the needle and float for wear to preserve leak-free operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple two-bolt flange mount — 48mm spacing\u003c\/li\u003e\n  \u003cli\u003eClean jets and float bowl periodically for consistent performance\u003c\/li\u003e\n  \u003cli\u003eInspect the high-hardness needle plunger for signs of wear\u003c\/li\u003e\n  \u003cli\u003eUse included spare jets to adapt to altitude or intake\/exhaust changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders and mechanics replacing a failing stock carb or seeking an affordable, tunable upgrade for 140–150cc dirt bikes, pit bikes, four-wheelers and ATVs. It’s aimed at hobbyists and weekend racers who need reliable fuel control, a secure flange fit, and spare jets for quick on-bike adjustments without aftermarket fabrication.\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 carburetor fit 150cc engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The NIBBI PE24mm is designed for 140–150cc engines, but confirm your flange matches the 48mm two-bolt spacing first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are additional jets included for tuning?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It ships with a pre-installed #112 main and #40 slow jet plus spare mains (#108, #110, #115) and a spare slow #35.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"nibbi","offers":[{"title":"Default Title","offer_id":48081336926366,"sku":"B0BXD6GZSZ","price":91.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/nibbi-carburetor-front-view_73c5fba9-6437-4f7b-a948-679c4a468cd8.jpg?v=1785799704","url":"https:\/\/northtrailauto.ca\/products\/nibbi-24mm-pe-carburetor-kit-for-140-150cc-dirt-bikes-atvs-48mm-flange-tunable-jets","provider":"North Trail Auto","version":"1.0","type":"link"}