Radi-Cal calipers feature an anti-knockback spring mechanism, which maintains the pistons extended and the pads in contact with the rotor during hard cornering. Additionally, Radi-Cal calipers feature a ventilated face that provides air flow inside the piston calipers, providing additional cooling. With Radi-Cal calipers’ stainless-steel construction, the coefficient of heat transfer is 15 times lower than aluminum, significantly reducing heat transfer into the brake fluid. The anodization is chip-resistant, reducing abrasions or scratches created from tools or wheels while working on your car, making them a perfect choice for discerning track day aficionados and club-level racers.įurthermore, heat transfer into the brake fluid primarily occurs through the caliper pistons. Moreover, all AP Racing Calipers in the URGE Essex brake kit come with a durable hard-anodized finish that provides a consistent look and texture even after many hard track days. The extra machining also increases surface area for heat dissipation, an essential factor in maintaining brake system performance over long track days. In addition to the asymmetrical design, Radi-Cal calipers feature an extreme amount of extra machining around the pistons and reinforcement supports, which reduces unsprung weight, improving the dynamics of the suspension and overall performance. This increased stiffness significantly improves pedal feel and increases braking torque. As such, Radi-Cal calipers feature an asymmetrical design that includes reinforcement in the corners to support the shearing load brake discs apply to the caliper. Unlike traditional calipers that prioritize stiffness under static rotors, Radi-Cal calipers factor in the torque that fast spinning rotors apply to brake pads, which can cause them to shear the caliper in half. With the Hard Anodized Finish, AP Racing Calipers can withstand high temperatures and thermal cycles while maintaining their appearance and structural integrity.Īs heat is a primary issue in brake system performance, the URGE Essex brake kit features Radi-Cal calipers, which adopt an innovative approach to caliper design.
#AP RACING RADI CAL CRACK#
Serious track time exposes calipers to extreme heat and countless thermal cycles that eventually discolor high-temperature paint and crack powder coating that cannot expand and contract with aluminum.
Anodization also enhances chip resistance, reducing abrasions or scratches caused by tools or wheels while working on the vehicle. Additionally, the extra machining increases the surface area of the caliper, facilitating better heat dissipation, which is a crucial aspect of high-performance brake systems.ĪP Racing Calipers are built with a durable Hard Anodized Finish that provides a uniform look and texture after numerous hard track days. The reduced unsprung weight helps improve the suspension dynamics of the vehicle, leading to better handling and performance. This is achieved by machining away any excess material around the pistons and reinforcement supports, which significantly reduces the overall weight of the caliper. The Radi-Cal calipers are not only designed to handle dynamic brake loading but also aim to minimize unsprung weight. Maximum Caliper weight reduction & Cooling Airflow With its superior performance, Radi-Cal represents a significant step forward in caliper technology, providing discerning racers and enthusiasts with the ultimate in braking power and control.
The Radi-Cal design is a prime example of how a new approach to traditional problems can yield impressive results. This significantly increases overall caliper stiffness, resulting in improved pedal feel and increased braking torque. Rather than being symmetrical, the caliper is reinforced in the corners to support the shearing load generated by the brake discs.
One notable feature of the Radi-Cal caliper is its asymmetrical design. By taking into account the stresses on the rotor and the brake pads, AP Racing has designed a caliper that is optimized for dynamic brake loading, providing superior performance and enhanced braking torque. Unlike traditional calipers, which prioritize stiffness under non-spinning conditions, Radi-Cal calipers have been developed to withstand the shearing forces generated by fast-spinning rotors. Radi-Cal calipers represent a revolutionary advancement in caliper design. Ultra-Stiff Caliper designs focused on Dynamic loading
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