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EC 307YH WA55 to Yamaha KT100 Manifold Adaptor Kit
307YH WA55 to Yamaha KT100 Manifold Adaptor Kit
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EC 307YH WA55 to Yamaha KT100 Manifold Adaptor Kit

Part Number: 307YH
Online Price: $30.00
Intake Manifold Adaptor WA55 to Yamaha KT100
Availability: In Stock.

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Description

307YH WA55 to Yamaha KT100 Billet Manifold Adapter Kit


Spec Manifold & Filter Adapter for Jr. Racing Classes

The 307YH Billet Manifold Adapter Kit is a spec-compliant solution designed to adapt the Walbro WA55 carburetor to the Yamaha KT100 engine—ideal for Junior kart racing applications. Whether you're building a new Jr. class kart or refreshing your setup, this kit ensures precise fitment, consistent airflow, and long-lasting durability.


Crafted from precision CNC-machined billet aluminum, the adapter maintains spec legality while optimizing the interface between carburetor and engine. The included filter adapter allows you to mount standard racing air filters with ease, helping to protect your engine and maintain performance lap after lap.


Key Features:

  • Fits Yamaha KT100 engines
  • Designed for Walbro WA55 carburetors
  • Junior kart racing legal (check local rules)
  • Precision-machined billet aluminum construction
  • Includes manifold and hardware
  • Improves durability and airflow consistency
  • Easy installation with secure fitment


Perfect For:

  • Junior kart racing classes using the WA55 carb
  • Racers seeking spec-legal billet performance upgrades
  • Teams upgrading from cast or worn-out adapters
  • Builders optimizing KT100 setups for competitive youth karting


Built to meet class rules. Designed for long-term performance.

Whether you're chasing your first podium or dialing in your next championship kart, the 307YH Billet Adapter Kit is a dependable choice for racers using the Yamaha KT100 with WA55 carb setups.



FAQ

Q1: What is this adapter kit used for?

A: It adapts a Walbro WA55 carburetor to a Yamaha KT100 engine, commonly used in Junior kart racing classes. It includes both the manifold and filter adapter for a complete installation.


Q2: Is this kit legal for spec or Jr. racing classes?

A: Yes, the 307YH kit is designed to meet spec regulations in many Jr. kart racing classes. However, you should always check your local or series-specific rulebook for confirmation.


Q3: What’s included in the kit?

A: The kit includes:

  • CNC-machined billet aluminum intake manifold
  • All necessary hardware for installation


Q4: Will this fit other carburetors or engines?

A: This adapter is specifically designed for the Walbro WA55 carburetor and Yamaha KT100 engine. It may not be compatible with other carburetors or engine types.


Q5: Is this made from billet aluminum?

A: Yes, both the manifold and adapter are CNC-machined from high-quality billet aluminum for strength, durability, and consistent airflow.

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