nibbi PE24 24mm Carburetor Kit for 140–150cc Dirt Bikes & ATVs — 48mm Flange, Aluminum, Tunable Jets

NIBBI's PE24mm carburetor kit is a complete replacement carburetor engineered to deliver precise fuel metering and reliable fitment for 140–150cc dirt bikes, pit bikes, and ATVs.

This cartridge-style PE24mm flange carburetor from NIBBI is built from high-strength aluminum alloy and ships with multiple jets installed and included so you can tune performance quickly. It replaces many common stock carburetors on 140cc–150cc four-stroke and two-stroke engines and is designed to reduce leaks, improve throttle response, and simplify maintenance. Before ordering, compare the flange two-hole distance (48mm) and mounting shape to your existing carb to ensure a direct swap.

Will this carburetor fit my 140cc–150cc dirt bike or ATV?

The NIBBI PE24mm was made to match common 140–150cc engine intake flanges used by many Chinese and aftermarket bikes. Fit depends on your intake flange layout and bolt spacing, so a quick measurement prevents surprises.

• Flange two-hole distance: 48mm (measure before purchase)
• Designed for 24mm intake diameter engines (PE24mm)
• Compatible brands include many Yamaha, Honda, Suzuki, and Kawasaki style engines
• Compare the shape of your old carburetor to product images for best fit

How does the kit improve fuel control and prevent leaks?

NIBBI focused on internal components to deliver more consistent metering and reduce leak points. The kit includes design elements that stabilize fuel flow and reduce the chance of overflow or seepage during use or storage.

• High-hardness oil needle plunger for accurate fuel shutoff
• Hollow oil float to maintain steady float height and reduce flooding
• Horn-shaped intake to smooth airflow into the venturi for better atomization
• Precision-machined aluminum body to maintain seal integrity under vibration

What jets and tuning options are included for dialing in performance?

The carb arrives pre-installed with common jet sizes and also includes spare jets so you can fine-tune air/fuel ratios for altitude, modifications, or riding style without hunting for parts.

• Pre-installed: #112 main jet and #40 slow jet for starting baseline settings
• Included replaceable main jets: #108, #110, #115 for richer or leaner main circuits
• Included replaceable slow jet: #35 to refine idle and low-throttle response
• Easy jet swapping helps adapt to exhaust, intake, or elevation changes

How straightforward is installation and what should I check before fitting?

Installation is direct for matched flanges and requires basic hand tools. Verify mounting hole spacing and intake shape first; if the carb aligns with your manifold and throttle linkages, the swap is usually bolt-on.

• Confirm 48mm flange bolt-center distance and matching flange shape
• Inspect throttle cable, choke, and fuel line routing for clearance
• Use supplied or equivalent gaskets and tighten bolts evenly to avoid air leaks
• Test for leaks and correct idle before full ride; adjust jets as required

Who this is for: Riders, mechanics, and hobbyists who need a durable, tunable replacement carburetor for 140–150cc dirt bikes, pit bikes, ATVs, and 4-wheelers. It's aimed at users who want a rugged aluminum build, pre-configured jetting plus spares for on-bike tuning, and a leak-minimizing design. If your machine uses a PE24mm-style intake and the flange spacing matches, this NIBBI kit offers a cost-effective path to improved throttle response and simpler maintenance.