MothAr PWK 24mm Universal Carburetor for 50cc–125cc Scooters ATVs — Chromed Throttle Slide, Power Jet

MothAr's Universal PWK 24mm carburetor is a bolt-on aftermarket carb designed to upgrade fuel delivery for 50cc–125cc single- and multi-cylinder scooters, ATVs, quads, and dirt bikes.

This compact 24mm PWK-style carb offers a durable chromed throttle slide and an integrated power jet to help tune mid-to-high RPM response. Engineered as a universal replacement, it fits many small-displacement engines from popular manufacturers and is compatible with a wide range of intake and airbox diameters when used with the correct adapters. It’s a popular choice for riders who want a tunable, performance-oriented carburetor without the higher cost of OEM or race-only units.

What vehicles and engine sizes will this carburetor fit?

The MothAr PWK 24mm is intended for small-displacement engines ranging roughly from 50cc to 125cc. It’s commonly used on scooters, mini dirt bikes, quads, ATVs and pit bikes from major and aftermarket brands when intake dimensions match or adapters are used.

• Recommended for 50cc, 80cc, 90cc, 100cc, 110cc, and 125cc engines
• Works with single- and multi-cylinder motors (1/2/4-cylinder as noted)
• Common fits: mini bikes, scooters, dirt bikes, SSR, TTR, Apollo, TaoTao, GY6-style machines
• May require manifold or airbox adapters to match specific frames

How does the carburetor improve engine performance and tuning?

This PWK-style unit has a semi-flat chromed throttle slide and a power jet that provide more predictable throttle response and better high-RPM fueling control compared with many stock carbs. With basic jetting adjustments and proper synchronization to your intake and exhaust, you can refine throttle response and top-end feel.

• Chromed semi-flat (D) throttle valve for smoother slide action
• Power jet for enhanced high-RPM fuel delivery
• Adjustable jets allow tuning for different airboxes, filters, and exhausts
• Solid construction intended for regular riding and light performance use

What are the critical dimensions and installation considerations?

Two key diameters determine compatibility: the intake manifold side and the air filter side. Confirm these measurements on your bike and get the correct adapter or clamp kit; improper fitment can cause leaks, poor performance, or starting issues.

• Intake manifold side outer diameter: 35mm
• Air filter side outer diameter: 50mm
• Designed as a universal aftermarket unit—may need manifold adapters or custom boots
• Check throttle cable routing and choke vacuum lines prior to final installation

How durable and serviceable is this aftermarket carburetor?

MothAr’s PWK 24mm uses common materials and service parts, so routine maintenance and rebuilds are straightforward. Cleaning passages, replacing jets, and renewing gaskets are standard procedures that keep this carb running reliably.

• Chromed throttle slide resists wear and reduces friction
• Standard jets and needles allow aftermarket replacements or upgrades
• Serviceable float bowl and accessible idle/mixture screws for tuning
• Aftermarket quality—inspect seals and fittings during installation

Who is this for: Riders and small-engine mechanics seeking an affordable, tunable replacement carburetor for 50cc–125cc scooters, mini bikes, ATVs, and dirt bikes. It suits hobbyists upgrading throttle response, tuners wanting more control over jetting, and anyone replacing a worn or clogged OEM carb—but plan to verify manifold and filter diameters and have basic tuning tools or a mechanic available for proper setup.