1. Home
  2. Carburetors
  3. Air Filter, Air Cleaners & Prefilters
  4. Air Filters
  5. 645EC Premium Air Filter Made in the USA fits 3 Filter Adaptors
645EC Premium Air Filter Made in the USA fits 3 Filter Adaptors
645EC Premium Air Filter - Blue
Write a Review

645EC Premium Air Filter Made in the USA fits 3 Filter Adaptors

Part Number: 645EC
Online Price: $41.99
Availability: Out of Stock.

Description

Premium Racing Air Filter for Go-Karts & Mini Bikes – Fits 3" Filter Adapters


Boost performance and protect your engine with our USA-made Premium Air Filter, designed specifically for racing go-karts and mini bikes using 3" filter adapters (such as Tillotson HR or GX390 stock inlets).


Built to ISO 5011 filtration standards and backed by over 30 years of performance automotive expertise, this air filter delivers superior airflow, filtration, and cooling in demanding racing environments.


Engineered for Power, Built for Performance

  • Wider, deeper pleats dramatically increase surface area for maximum airflow and filtration efficiency
  • Optimized design cools ambient air, helping to stabilize air/fuel ratios for consistent tuning and more power
  • Outperforms off-shore filters, especially in dusty, sandy, or fine-particle conditions

Whether you're racing on dirt, track, or trail, this filter is built to meet and exceed the demands of small engine racing.

Key Features:

  • Made in the USA – Quality you can trust
  • ISO 5011 Standard – Professional-grade filtration
  • High-Durability Construction – Built for racing environments
  • Improved Airflow – Helps optimize engine performance

Specifications:

  • Fits: 3" Filter Adapter (Most Tillotson HR, GX390, and other standard adaptors)
  • Design: Tapered
  • Top Diameter: 3.5"
  • Bottom Diameter: 5"
  • Element Length: 5"
  • Overall Length: 5.625"

Related Items

AFR-3880 Air Filter fits 38mm/1.5-Inch Adaptor
$9.99
Out of Stock.

Recently Viewed Items