Butlerbuilt Brake Air Duct
Butlerbuilt Brake Air Ducts: Race-Proven Cooling for Serious Competitors
When it comes to thermal management on the race track, few components are more critical — or more overlooked — than the brake air duct. Sustained high-speed braking generates enormous heat in rotors and calipers, and without a steady supply of cool, directed air, brake fade and component failure become very real risks. Butlerbuilt has earned its reputation in the motorsports world by engineering solutions that racers at the highest levels of competition trust, and their brake air ducts are no exception.
A Motorsports Brand Built on Precision
Butlerbuilt Motorsports Equipment was founded in 1981 by Brian Butler, who identified an engineering gap in the NASCAR paddock and set out to fill it. The company opened in the early 1980s after founder Brian Butler found a niche designing and building aluminum seats for NASCAR teams, and throughout the 1980s and '90s, Butlerbuilt grew to become the preferred choice for racecar drivers in nearly every form of American motorsports. That same commitment to purpose-built engineering extends across a product line that includes a wide variety of safety products for the motorsports industry, including NACA ducts, air tube, and more.
CAD-Engineered NACA Duct Design
Butlerbuilt air ducts are used by many top NASCAR competitors, with computer-aided design (CAD) providing an optimum aerodynamic shape for smooth, uninterrupted airflow. The NACA duct profile — a shallow, ramped inlet geometry originally developed by aeronautical engineers — minimizes drag while maximizing the volume of cool air captured and directed to where it is needed most. These NACA ducts can be installed in side windows or body panels to direct cool outside air to brakes, oil coolers, or the cockpit.
Butlerbuilt offers their brake air ducts in both single-tube and dual-tube configurations, in tube diameters of 2.5 inches and 3 inches, giving racers flexibility depending on brake system demands and available mounting space. These NACA-style ducts are crafted from high-quality plastic, ensuring durability and optimal airflow. Options are available in black and clear finishes — clear being especially useful for visual inspection of hose connections and routing without removing bodywork.
Body-Mount Versatility for Multiple Racing Applications
These air or brake ducts are crafted for body-mount installation on either the driver or passenger side. Whether building a circle-track stock car, a dirt late model, or a road racing application, the body-mount design allows crews to position ducting directly in the airstream for maximum capture efficiency. The offset single-duct variants (such as the BBP-7020) are especially popular for tight packaging situations where a centered duct inlet isn't possible. Designed with racing in mind, Butlerbuilt products are made from lightweight materials to reduce weight without sacrificing durability.
Why Choose Butlerbuilt for Brake Cooling?
- NASCAR-validated design — used by top-level professional racing teams
- CAD-optimized aerodynamics — engineered for smooth, uninterrupted airflow
- Single & dual tube options — in 2.5" and 3" diameters to match your brake cooling needs
- Body-mount versatility — fits driver or passenger side across a wide range of race car platforms
- Lightweight molded plastic construction — durable without adding unnecessary weight
- Available in black or clear — for easy visual inspection and a clean install
For any competitor serious about managing heat and protecting brake performance lap after lap, Butlerbuilt brake air ducts represent a trusted, proven solution. Explore the full selection of brake air ducts or learn more about the complete lineup from Butlerbuilt Motorsports Equipment.