Perfco Performance Competition Air Filters.

Not all filters are built equal. Manufactured here in the UK, Perfco Performance competition filters fill a gap in our market for high-quality competition foam air filters.

Our specialist lineup includes universal alloy neck and rubber neck cone filters, filter socks, carburettor filters, and our flagship enclosed FP filter. This blog post focuses on our CA and FS Series range of carburettor filters, providing focused information.

CA Series.

Our Perfco Performance CA Series filters are a top choice for both competition and street use, designed to bolt directly onto the carburettor body for a hassle-free install. Built for performance, these filters feature a sturdy twin-layer foam element, reinforced by a stainless-steel cage to maximise surface area and optimise airflow for better induction.

The baseplates are precision-cut to fit a variety of popular carburettor types, ensuring a secure fit. Plus, with quick-release fasteners, swapping or cleaning the filter is straightforward—no messing around with complicated fittings.

The Perfco Performance CA Series filters are available in multiple standard heights across the range to accommodate different engine bay clearances, so you can get the best fit without compromising performance.

Key Features:

  • High-Performance Twin-Layer Foam – Offers superior filtration without restricting airflow.
  • Black Powder-Coated Baseplate – Durable and corrosion-resistant, with a clean, sleek look.
  • Quick-Release Push Clips – Makes installation and removal effortless.
  • Easy Maintenance – Using our Perfco Performance filter service kits.
  • Lifetime Warranty – Covered for manufacturing defects (single user, non-transferable).
  • Built to Last – Tough enough for high-performance applications, whether on the street or track.

The CA Series Range:

  • CA2: Designed for single carburettor setups, the CA2 filter offers a compact solution without compromising on filtration efficiency or airflow.

  • CA4: Tailored for twin carburettor configurations, the CA4 provides enhanced filtration capacity to meet the demands of dual setups.

  • CA5: Also intended for twin carburettor systems, the CA5 variant offers a different form factor or size to accommodate specific engine requirements.

FS Series.

Perfco Performance FS Series filter socks are a versatile and compact filtration solution designed to fit directly over individual carburettor or throttle body intakes. They provide excellent airflow while ensuring optimal protection against dust, dirt, and debris. FS Series filter socks are particularly popular for applications where space is limited and using our CA Series isn’t feasible.

Key Features:

  • High-Performance Twin-Layer Foam – Offers superior filtration without restricting airflow.
  • Universal Design – Designed to slip over individual intakes, making them ideal for multi-carb setups.
  • Lightweight & Compact Design – Perfect for applications with tight engine bay clearances.
  • Easy Maintenance – Using our Perfco Performance filter service kits.
  • Ideal for Motorsport & Street Use – Suitable for motorcycles, classic cars, kit cars, and performance engines.