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This Audi S5 B9 upgrades its front brakes to AP Racing Radi-CAL II calipers with STOPFLEX carbon ceramic rotors. The black car’s red AP Racing calipers are visible behind dark multi-spoke wheels, with a two-disc set displayed before installation.
- Front: AP Racing Radi-CAL II CP8521 6-piston calipers with STOPFLEX 393mm carbon ceramic rotors.
- Pads: STOPFLEX CCB-specific brake pads.
The AP Racing Radi-CAL II CP8521 calipers, our ceramic discs and CCB-specific pads form a complete front upgrade for this S5. The red calipers and drilled faces give the black car a clear visual change behind its dark multi-spoke wheels.
Our B9 S5/RS5 carbon ceramic rotor range uses a carbon-silicon-carbide friction surface selected for high-temperature stability. Dedicated ceramic-compatible pads complete the friction pairing, with road-focused options designed around normal operating temperatures and controlled modulation.
The ceramic disc faces also avoid the orange flash-rust that can appear on iron after rain or washing. For an S5 owner considering an AP Racing front conversion, this package brings the caliper upgrade, ceramic rotor material and supporting pads together as one solution.
Send your VIN, year, make/model and current configuration. Our team will confirm the complete AP Racing front brake upgrade for your Audi S5 B9.
