nibbi 22mm PE22FL Carburetor Performance Kit with 48mm CNC Air Filter — 125–140cc Pit Bike/ATV Upgrade, Adjustable Jets

NIBBI's 22mm PE22FL carburetor performance kit replaces stock PZ24-style carbs to improve throttle response and tuning flexibility on 125–140cc pit bikes, minibikes, dirt bikes and ATVs.

This complete upgrade bundles a CNC-machined 48mm air filter and a fully adjustable 22mm carburetor designed for small-displacement four-stroke engines. Built with an anodized finish for corrosion resistance and durability, the kit includes spare main jets and a pilot jet so you can tune for altitude, temperature, or aftermarket exhausts. It fits many common models from TaoTao, SSR, Apollo, Xpro and similar pit bikes and learner ATVs, offering a straightforward bolt-on replacement to improve fueling control.

Will this carburetor fit my 125cc or 140cc pit bike?

The PE22FL is sized for engines that accept a 22mm inner carb bore and a 48mm flange bolt spacing. Many small four-stroke pit bikes, minibikes and ATVs use this standard, but confirm your engine throat and flange measurement before purchasing.

• Carburetor inner diameter: 22mm (engine side)
• Flange hole distance (bolt center-to-center): 48mm
• Air filter outer diameter: 46mm
• Common compatible brands: TaoTao, SSR, Apollo, Xpro, TTR-style models

How does tuning flexibility help performance?

Adjustability is key to matching fuel delivery to engine modifications, weather and elevation. The NIBBI carburetor gives control over the main jet, pilot jet, needle position and air screw so you can fine-tune mixture across the whole throttle range.

• Includes replacement main jets: #92, #95, #100 for richer/leaner choices
• Includes one #30 pilot jet for idle and low-throttle settings
• Needle and air screw adjustable for mid-range and transition tuning
• Useful for exhaust or intake upgrades and elevation changes

What are the construction and durability highlights?

The carburetor features an anodized painted surface to resist corrosion and wear from exposure to fuel and dirt. The CNC-machined air filter is designed for consistent airflow and solid mounting, while the overall assembly is built to withstand off-road conditions.

• Anodized finish for improved corrosion resistance and a refined look
• CNC air filter housing for precise fit and airflow stability
• Robust body construction suitable for off-road use
• Delivered with installation manual for correct fitment

What comes in the box and how easy is installation?

This kit includes everything needed for installation and initial tuning, with spare jets so you can adapt quickly. Basic mechanical skills and common hand tools are sufficient for installation; follow the provided manual to avoid vacuum or air-leak issues.

• 1 × NIBBI 22mm PE22FL carburetor
• 1 × NIBBI CNC 48mm air filter (outer diameter 46mm)
• Replacement main jets: #92, #95, #100 and pilot jet #30
• Carburetor installation manual included

Who is this for: Riders upgrading small-displacement four-stroke machines—pit bikes, minibikes, dirtbikes and learner ATVs in the 125–140cc range—who need finer fuel control, easier tuning for aftermarket parts or more reliable performance in variable conditions. Confirm your engine's 22mm bore and 48mm flange spacing before ordering to ensure a proper fit.