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Walbro WA-55 Billet Air Filter Adaptor
303FA EC Billet Filter Adaptor
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Walbro WA-55 Billet Air Filter Adaptor

Part Number: 303FA
Online Price: $29.99
303FA Filter Adapter for Walbro WA-55 – 2.5" Air Filter Mount
Availability: In Stock.

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Description

303FA CNC Filter Adapter for Walbro WA-55 Carburetor – 2.5" Air Filter Mount


The 303FA Filter Adapter is engineered to precisely mount a 2.5" ID air filter to your Walbro WA-55 carburetor, providing a secure and efficient intake solution for classes where high-flow velocity stacks are not permitted.


CNC machined from high-quality 6061-T6 aluminum, this adapter ensures durability, optimal fitment, and clean airflow to your engine. Designed with racers in mind, it’s the ideal choice for legal performance in restricted classes.


While velocity stacks offer superior airflow and are recommended wherever allowed, the 303FA Filter Adapter is your best alternative when rules prohibit their use. Always check your rule book before installing to ensure compliance.


Key Features:

  • Purpose-Built Fit: Mounts a 2.5" inside diameter air filter to Walbro WA-55 carburetors
  • Racing Legal Option: Perfect for classes where velocity stacks are not allowed
  • Premium Construction: CNC machined from 6061-T6 billet aluminum for strength and precision
  • Easy Installation: Includes all necessary components for a secure and straightforward install
  • Optimized for Kart Racing: Commonly used with Yamaha KT100 engines in JR I class karting


Compatibility & Fitment:

  • Fits: Walbro WA-55 Carburetor
  • Common Use: Yamaha KT100 engine in JR I Class kart racing
  • Dimensions: Approx. 2.5" OD air filter size x 0.754" ID bolt spacing, 30mm fitted 5mm (verify with your filter before purchase)


Why Choose EC’s 303FA Adapter?

When performance and rule compliance matter, the 303FA filter adapter delivers both. Designed specifically for kart racers running the Walbro WA-55 carb, it provides a clean, high-quality air intake option when velocity stacks are restricted.

FAQ

1. What does the 303FA Filter Adapter do?

It allows you to mount a 2.5" ID air filter to the Walbro WA-55 carburetor, commonly used on Yamaha KT100 engines, especially in racing classes where velocity stacks are banned.


2. Is the 303FA adapter legal for racing?

Yes, the 303FA is designed for use in kart racing classes where velocity stacks are not legal. Be sure to check your rulebook before installing.


3. What is it made from?

Each adapter is CNC machined from 6061-T6 billet aluminum, ensuring high strength, lightweight performance, and a precise fit.


4. What carburetors does this fit?

It fits the Walbro WA-55 carburetor, which is commonly found on Yamaha KT100 engines in the JR I karting class.


5. What are the exact dimensions?

The adapter fits a 2.5" OD air filter and has an approximate 0.754" ID bolt spacing, 30mm fitted with 5mm bolts. Always confirm filter fitment before purchase.


6. Do I need any additional parts to install it?

No. The 303FA comes with all required parts for installation.


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