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Performance Brakes

Opposed-Piston Calipers

PBR has developed a uniquely designed opposed-piston brake caliper in response to the increased performance demands of high-end production sports vehicles.

Incorporating a light weight aluminium, monoblock caliper housing and opposed pistons, these calipers feature a pad-per-piston design that significantly improves fade resistance and disc pad life under extreme usage.

PBR's opposed-piston brake calipers are the ideal solution where maximum brake performance is critical and vehicle owners are more likely to participate in regular track events at club meetings.

Features	Benefits
Monoblock design	High body stiffness for low fluid displacement Lightweight caliper body
Maximises wheel space facilitating larger rotors	Lower brake temperatures Increased fade resistance Consistent pedal feel under extreme conditions
Multiple pistons	Improved pad pressure distribution Increased fade resistance
Multiple pads	High resistance to tapered pad wear Increased pad life under abuse conditions
Quick change pads	Reduced service time
Lightweight construction	Reduced un-sprung mass for improved vehicle dynamics Reduced caliper mass for improved fuel efficiency
Wide range of colour coating and branding options	Product differentiation and increased market appeal

Application of Technology

PBR's opposed-piston brake calipers have been incorporated as part of the front and rear performance brake modules on the Chevrolet Corvette Z06, a vehicle with best in class brake performance.

Twin-Piston Calipers

PBR first developed twin-piston aluminium calipers as a performance brake for the Chevrolet Corvette in 1988. By incorporating PBR's unique Slimline design principles, these calipers can be packaged with much larger brake rotors than conventional caliper designs making it the perfect solution for applications where brake performance is critical. PBR's twin-piston calipers consistently achieve best-in-class

results against the demanding AMS (Auto Motor and Sport) test specification.

Features	Benefits
Caliper design principle	Even pad pressure distribution results in high fade resistance delivering consistent braking under extreme conditions Lower operating temperatures resulting in improved pad life Low brakes-off drag reducing noise and pad wear High body stiffness for low fluid displacement
Lightweight construction	Reduced un-sprung mass for improved vehicle dynamics Reduced caliper mass by up to 30% for improved sports handling and fuel efficiency
Wide range of colour coating and branding options	Product differentiation and increased market appeal

Application of Technology

PBR's twin-piston calipers are the ideal performance brake solution for sports vehicles with large, open spoke wheels which demand a combination of high-end performance and aggressive styling.

Production performance vehicles that have benefited from PBR's twin-piston caliper technology include Chevrolet Corvette, Ford Mustang Cobra, Holden Special Vehicle models and Ford Performance Vehicle models as well as light truck and SUV applications such as the Chevrolet Trailblazer and Suburban.

Performance Disc Rotors

PBR performance brake rotors are designed to deliver optimum performance. Understanding that no two performance vehicle models are the same, PBR's design flexibility ensures that the final rotor geometry is tailored to match each model's performance requirements.

PBR's capability to maintain extremely tight tolerances coupled with well researched design elements result in significantly improved disc rotor performance.

Performance enhancing features such as grooves and cross-drilling can be incorporated into the design to significantly improve pad bite and out-gassing.

Features	Benefits
Optimised thermal mass	Lower braking temperatures Shorter stopping distances
Anti-coning design	Significantly reduces rotor coning under high temperature
Optimised ventilation	Optimal cooling behavior without increased mass Improved resistance to thermal judder Low transient and permanent deformation
Grooves and cross-drilling	Improved fade resistance Aggressive styling
High-carbon, alloyed grey iron	Higher resistance to cracking under abuse conditions Lower noise propensity
Precise machining tolerances	Extremely low DTV (Disc Thickness Variation) Very low levels of lateral run-out
Range of coating options	Improved corrosion protection Improved aesthetics

Application of Technology

PBR's performance brake rotor technology has been adopted by high performance production cars such as the Pontiac GTO in North America and the Holden Monaro in Australia.