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Our CP9449/340mm Radi-CAL Competition Brake Kit offers our customers the following advantages over the OEM front ND Miata and Fiat 124 Spider brake system:
the GS1R is available with fully customizable finish options
You'll appreciate the more aggressive exhaust note and significant horsepower increase
It fits perfectly in the OEM airbox and is built with the highest quality materials
The exhaust valves are made by Helical Limited in the United Kingdom
Porsche 986 / 987 Rotors 718 GT4 RS Exhaust Our CP9449/340mm Radi-CAL Competition BrakeThe Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers and longer bolts. Our rotor is slightly larger than the OEM rotor at 325 mm providing greater braking force and cooling capacity. The central hat section of our rotor is made from strictly U. S. sourced 6061 T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to