Polini PWK 30mm Carburetor: Honda Dio, SYM DD, 72cc Big Bore

Race-Grade Performance: Polini PWK 30mm Racing Carburetor

The Polini PWK 30mm is widely considered the best-performing "D-slide" carburetor on the market. Unlike standard flat-slides, this Italian-engineered masterpiece features a turned-out intake tract and machined funnel for superior airflow and instantaneous throttle response. It is the gold standard for high-end 70cc–90cc 2-stroke builds and 125cc–300cc 4-stroke tuning.

Why the Polini PWK Outperforms:

• Precision Machined: CNC-finished intake duct ensures maximum airflow precision—no "rough" casting marks here.
• Simplified Tuning: Polini purposely removed the troublesome "Power-Jet" system used in cheaper clones, ensuring a more stable and reliable tune.
• Universal Parts Support: Uses standard PWK main and pilot jets, making it incredibly easy to find tuning components locally.
• Race-Ready Finish: Lightweight chrome-alloy slide is highly resistant to abrasion and wear for long-term consistency.

Model Fitment Guide

This 30mm unit is a primary performance upgrade for the following "Rugged" and Performance platforms:

Technical Specs 

• Carburetor Size: 30mm
• Main Jet: #118 (Pre-installed) | Pilot Jet: #45
• Manifold Connection: 35mm (Fits standard PWK/OKO rubber boots)
• Air Filter Mount: 48.8mm (Fits most pod-style high-flow filters)
• Choke: Integrated Manual Pull-Button
• Original Parts For Scooters SKU 146-8-30

Pro Builder Tip: When moving to this 30mm carb, you must use a high-flow intake manifold with a 35mm opening. We recommend pairing this with the Polini Evolution Reed Valve for the ultimate intake path.

This product is intended for off-road use only.

This product is not intended for use on public roads or land.

This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.

*Performance upgrades are considered racing parts and are not covered by warranty.