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The Terminator
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<blockquote data-quote="ac427cobra" data-source="post: 16033033" data-attributes="member: 6247"><p>I would agree with this only if you are talking about staying with a 13" front brake. </p><p></p><p>Two factors come into play with brakes, #1 rotor diameter which relates to leverage advantage and clamping force which relates to piston diameter and piston count. When Ford came out with the 2007 Shelby GT500 it had 110 more HP than the last SVT offering which was the Terminator. This increase in power along with the additional vehicle weight dictated why the Shelby came from the factory with a 14" front rotor diameter and four piston fixed Brembo calipers. This matched the required braking capacity to the vehicle. Much like when the 2013 Shelby GT 500 came out with 162 additional horsepower over the last Shelby GT500 offering, front rotor diameter once again was upgraded to 15" and the calipers went from four piston to six piston fixed to be able to stop the much more powerful and heavier vehicle. This is also the reason the rear brake rotors on the latest Shelby GT500 went from 12.8" to 13.75" diameter to keep the front/rear bias where it needed to be. </p><p></p><p>These year by year brake upgrades brings us to the latest offering, the Shelby GT350. It has 15.5" diameter front rotors with 6 piston fixed Brembo calipers and 15" rear rotors with four piston fixed Brembo calipers. This latest Shelby offering has the best brakes to ever come from Ford on a Mustang including previous Ford Racing competition vehicles. (prior to the GT 350)</p><p></p><p>Some people are under the impression that the front Cobra OEM PBR calipers with 13" rotors are good brakes. In reality, they are just barely adequate to pass minimum safety standards which is why they came as standard equipment on these vehicles. A two piston floating caliper like the PBR caliper is half as efficient as a four piston fixed caliper when it comes to clamping force. </p><p></p><p>A 14" four piston fixed caliper with be a significant front brake upgrade for any SN-95 vehicle because you will be upgrading both diameter and clamping force. This translates to less pedal travel and less pedal pressure/effort for everyday driving along with eyeball popping stopping power when you need it. </p><p></p><p>A 14" front brake upgrade does require 18" wheels. Once the front brakes have been upgraded to a 14" four piston setup the rear brakes will be under biased. The 11.6" will be carrying a very small portion of the braking load which is why we developed our 13" rear brake conversion kit to put the front/rear brake bias back where it needs to be. A Mustang with this brake set-up will stop more like a Corvette than a Mustang.</p></blockquote><p></p>
[QUOTE="ac427cobra, post: 16033033, member: 6247"] I would agree with this only if you are talking about staying with a 13" front brake. Two factors come into play with brakes, #1 rotor diameter which relates to leverage advantage and clamping force which relates to piston diameter and piston count. When Ford came out with the 2007 Shelby GT500 it had 110 more HP than the last SVT offering which was the Terminator. This increase in power along with the additional vehicle weight dictated why the Shelby came from the factory with a 14" front rotor diameter and four piston fixed Brembo calipers. This matched the required braking capacity to the vehicle. Much like when the 2013 Shelby GT 500 came out with 162 additional horsepower over the last Shelby GT500 offering, front rotor diameter once again was upgraded to 15" and the calipers went from four piston to six piston fixed to be able to stop the much more powerful and heavier vehicle. This is also the reason the rear brake rotors on the latest Shelby GT500 went from 12.8" to 13.75" diameter to keep the front/rear bias where it needed to be. These year by year brake upgrades brings us to the latest offering, the Shelby GT350. It has 15.5" diameter front rotors with 6 piston fixed Brembo calipers and 15" rear rotors with four piston fixed Brembo calipers. This latest Shelby offering has the best brakes to ever come from Ford on a Mustang including previous Ford Racing competition vehicles. (prior to the GT 350) Some people are under the impression that the front Cobra OEM PBR calipers with 13" rotors are good brakes. In reality, they are just barely adequate to pass minimum safety standards which is why they came as standard equipment on these vehicles. A two piston floating caliper like the PBR caliper is half as efficient as a four piston fixed caliper when it comes to clamping force. A 14" four piston fixed caliper with be a significant front brake upgrade for any SN-95 vehicle because you will be upgrading both diameter and clamping force. This translates to less pedal travel and less pedal pressure/effort for everyday driving along with eyeball popping stopping power when you need it. A 14" front brake upgrade does require 18" wheels. Once the front brakes have been upgraded to a 14" four piston setup the rear brakes will be under biased. The 11.6" will be carrying a very small portion of the braking load which is why we developed our 13" rear brake conversion kit to put the front/rear brake bias back where it needs to be. A Mustang with this brake set-up will stop more like a Corvette than a Mustang. [/QUOTE]
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