AP Racing: Your Ultimate Performance Brake Guide

When it comes to automotive braking systems, particularly in the demanding worlds of motorsport, high-performance road cars, and even the original equipment (OE) sector, one name consistently stands out for its engineering prowess and unwavering commitment to quality: AP Racing. For decades, AP Racing has been at the forefront of brake technology, supplying components that deliver exceptional stopping power, reliability, and control under the most extreme conditions. If you're looking to upgrade your vehicle's braking performance or simply understand the breadth of what AP Racing offers, delving into their comprehensive product catalogue is an essential first step. This guide will navigate you through the AP Racing catalogue, highlighting key product categories and answering common questions about their renowned brake calipers.

Understanding the AP Racing Catalogue

The AP Racing catalogue serves as an invaluable resource for anyone involved in or passionate about high-performance automotive and motorsport applications. It's meticulously designed to provide a clear and concise overview of their most popular and widely used products. Whether you're a seasoned motorsport engineer, a dedicated track day enthusiast, a professional mechanic working on high-performance vehicles, or even a motorcycle rider seeking superior braking, the catalogue aims to be your go-to guide.

The latest iteration of the catalogue, available online at catalogue.apracing.com, has been developed with the user in mind. It aims to cover the core of AP Racing's offering, ensuring that individuals across various sectors can easily find suitable components. However, it's important to note that the catalogue doesn't list every single product manufactured by AP Racing. The company prides itself on its flexibility and its ability to cater to bespoke requirements. Therefore, if your needs extend beyond what's presented in the catalogue, direct contact with AP Racing or one of their official distributors is highly recommended. They are equipped to assist with more specialised or unique braking solutions.

For those who still prefer a physical copy, AP Racing continues to produce a traditional paper version of their catalogue. This has historically been a popular format for many in the industry. The paper version is typically made available after a certain date, with the 2020 paper catalogue being available from October 16th, 2020. To obtain a copy, customers are encouraged to contact AP Racing directly via email at [email protected] or to reach out to their nearest official distributor or dealer.

Key Product Categories within the AP Racing Catalogue

The AP Racing catalogue is structured to showcase the depth and breadth of their braking expertise. While the full catalogue is extensive, several key product categories form the backbone of their offering:

Brake Calipers

AP Racing is perhaps most famous for its exceptional range of brake calipers. These are the crucial components that house the brake pads and, when activated by hydraulic pressure, force the pads against the brake discs to create friction and slow the vehicle. AP Racing calipers are engineered for:

• Superior Stopping Power: Designed to generate immense clamping force, ensuring rapid and effective deceleration.
• Heat Dissipation: Utilising advanced materials and designs, such as multi-piston configurations and internal fluid passages, to manage and dissipate heat effectively, preventing brake fade.
• Durability and Strength: Constructed from high-strength materials like forged aluminium or billet aluminium, capable of withstanding extreme pressures and temperatures.
• Reduced Weight: Optimised designs contribute to a reduction in unsprung mass, which can improve vehicle handling and acceleration.
• Pad Longevity: Even pad wear is a common characteristic, leading to longer pad life and more consistent braking performance.

The catalogue will feature various types of calipers, including monobloc calipers (machined from a single piece of metal for maximum rigidity) and two-piece calipers, with piston counts ranging from two to eight or even more, depending on the application. Different piston sizes and arrangements are used to optimise brake balance and feel for specific vehicles and racing disciplines. For example, a 6-piston caliper might be paired with a larger disc for a heavy GT car, while a lighter 4-piston caliper might be ideal for a smaller, agile sports car.

Brake Discs

Complementing their calipers, AP Racing offers a wide array of brake discs, also known as rotors. These are the rotating surfaces that the caliper pads clamp onto. AP Racing discs are characterised by:

• Ventilation: Featuring advanced internal vane designs (e.g., curved vanes, pillar-vented) to maximise airflow and cooling, crucial for preventing overheating.
• Material Quality: Typically made from high-carbon iron alloys, chosen for their thermal stability, wear resistance, and friction characteristics.
• Two-Piece Designs: Many high-performance discs are two-piece, comprising a cast iron friction ring bolted to an aluminium alloy bell. This design helps to reduce weight, allow for thermal expansion without distortion, and simplify replacement of the friction ring.
• Grooved and Drilled Options: Grooves help to clear away gases and debris from the pad surface, while drilled holes can aid in initial cooling and weight reduction, though they can sometimes be more susceptible to cracking under extreme heat cycles. AP Racing often offers a variety of surface finishes to suit different performance needs.

Brake Pads

The friction material that interfaces with the discs is equally critical. AP Racing provides a comprehensive range of brake pads formulated for different driving conditions and temperatures:

• Compound Variety: From aggressive, high-temperature motorsport compounds designed for maximum bite and fade resistance on track, to more street-friendly compounds that offer good performance with lower noise and dust levels.
• Performance Characteristics: Each compound is engineered for specific friction coefficients, operating temperature ranges, and wear rates.

Brake Kits

For ease of upgrade, AP Racing offers complete brake kits. These kits typically include matched calipers, discs, pads, and often the necessary mounting hardware and brake lines. Using a matched kit ensures optimal compatibility and performance, taking the guesswork out of upgrading your braking system.

Clutches and Driveline Components

While renowned for brakes, AP Racing also manufactures a range of high-performance clutches, flywheels, and other driveline components, often designed to complement their braking systems and handle increased power outputs from modified engines.

AP Racing Brake Calipers: A Closer Look

Let's delve deeper into the types of brake calipers you'll find within the AP Racing catalogue and what makes them so sought after:

Product Types and Features

AP Racing calipers are generally categorised by their construction and piston configuration. Common types include:

• CP Series Calipers: This is a vast and popular range, often featuring forged aluminium alloy bodies for strength and lightness. They are available in various piston counts (e.g., CP5555, CP6969) and sizes, designed for a wide spectrum of applications from small sports cars to larger GT cars and touring cars. Many CP series calipers utilise differential piston sizes to ensure even pad wear.
• Pro 5000 R Calipers: These represent a premium offering, often featuring advanced monobloc construction for ultimate rigidity and performance. They are typically found on top-tier motorsport vehicles where minimal flex and maximum response are paramount.
• Radi-CAL Calipers: A significant innovation from AP Racing, the Radi-CAL design features a radical, sculpted body shape. This isn't just for aesthetics; the unique form is computer-optimised to maximise stiffness while minimising weight and improving airflow around the caliper. This results in superior pedal feel and braking consistency.

Key features across these ranges often include:

• Differential Bore Sizing: To ensure that the brake pad wears evenly across its surface, AP Racing often employs pistons of different diameters within the same caliper. This compensates for the natural tendency of the leading edge of the pad to wear faster.
• Sealed Piston Designs: Many calipers feature internal seals that protect the pistons and bore from dust, dirt, and moisture, enhancing longevity and reducing maintenance.
• Internal Fluid Transfer: Some high-performance calipers are designed with internal fluid transfer ports between piston chambers, further improving rigidity and consistency.
• Pad Retaining Pins/Clips: Easily accessible mechanisms for quick brake pad changes, a crucial feature in motorsport pit stops.

Applications for AP Racing Calipers

The versatility of AP Racing calipers means they are used in virtually every form of motorsport and high-performance driving:

• Formula 1 and Formula E: While specific models are proprietary, AP Racing's technology underpins braking systems in various levels of open-wheel racing.
• GT Racing: Widely used in series like the FIA GT World Cup, British GT, and SRO GT racing, where endurance, heat management, and power are critical.
• Touring Cars: Competitors in BTCC and other touring car championships rely on AP Racing for robust and consistent braking.
• Rallying: From WRC to national rally championships, AP Racing calipers are chosen for their durability and performance in varied and often harsh conditions.
• Sports Car Racing: Endurance racing series like Le Mans rely on components that can withstand prolonged high-speed operation.
• High-Performance Road Cars: Many performance car manufacturers specify AP Racing components as OE fitment or as optional upgrades.
• Track Day and Enthusiast Cars: Aftermarket upgrades for popular sports cars and performance sedans frequently feature AP Racing calipers and kits to enhance braking for track use.

Choosing the Right AP Racing Components

Selecting the correct AP Racing components requires careful consideration of your vehicle, its intended use, and your performance goals. The catalogue provides detailed specifications for each product, including dimensions, piston sizes, fluid displacement, and recommended disc sizes. Consulting with an AP Racing specialist or a reputable performance brake supplier is highly advisable. They can help you match the right caliper, disc, and pad combination to your specific needs, ensuring optimal braking performance and safety.

Frequently Asked Questions (FAQs)

Q1: What is the primary advantage of AP Racing calipers over standard calipers?

A1: AP Racing calipers are engineered for significantly higher performance. They typically feature more pistons, larger piston areas for greater clamping force, superior materials for heat resistance and rigidity, and advanced designs for better heat dissipation and pad wear. This translates to shorter stopping distances, reduced brake fade, and improved pedal feel.

Q2: Can I fit AP Racing calipers to any car?

A2: While AP Racing offers a vast range of calipers, direct fitment often requires specific mounting brackets tailored to your vehicle's hub and suspension geometry. Many AP Racing kits are designed for specific car models or platforms. It's essential to check compatibility or consider purchasing a complete AP Racing brake kit designed for your vehicle.

Q3: How do I know which AP Racing brake disc size to use with a specific caliper?

A3: The AP Racing catalogue will specify the maximum and recommended disc diameter and thickness for each caliper model. This ensures that the caliper can adequately cover the friction surface of the disc and that the piston area is correctly matched to the disc's surface area for optimal braking force distribution.

Q4: What is the difference between a monobloc caliper and a two-piece caliper?

A4: A monobloc caliper is machined from a single piece of metal, offering the highest level of rigidity and strength, which minimizes flex under heavy braking. A two-piece caliper is constructed from two separate components (e.g., caliper halves) bolted together. While still very strong, monobloc designs generally offer a slight advantage in stiffness.

Q5: How often should I replace my AP Racing brake pads and discs?

A5: The lifespan of brake pads and discs depends heavily on the compound used, driving style, and operating conditions. High-performance motorsport pads and discs used on track will wear much faster than street-oriented components. Regular inspection for wear, thickness, and any signs of damage (like cracks or warping) is crucial. AP Racing provides wear indicators on some pads, and visual inspection of disc thickness and surface condition is standard practice.

Conclusion

The AP Racing catalogue is more than just a list of parts; it's a testament to a company's dedication to pushing the boundaries of braking technology. By understanding the range of calipers, discs, pads, and kits available, vehicle owners and motorsport professionals can make informed decisions to significantly enhance their vehicle's braking performance, safety, and reliability. Whether you're aiming for milliseconds on the track or simply seeking superior stopping power for spirited road driving, AP Racing offers a solution engineered for excellence.