Isn the StopTech ST-40 caliper is the same as a Brembo or Porsche Big Red?
The ST-40 is a completely new caliper designed specifically to perform on the street and track. The Patented “Bolt-in” Bridge is unique to our design, making the ST-40 two times stiffer than the competition. The ST-40 offers 8 different piston diameters to choose from, so the caliper can be made to specifically balance any application. The ST-40 can be made to fit from 28 to 35mm thick rotors and 328 to 380mm rotor diameters. Dust boots are standard on all street calipers, and commonly available pad wear sensors can be used. Though the ST-40 will mount in the same place as a Brembo F-40 or F-50 caliper and uses common pistons and seals, it is a superior caliper in terms of stiffness, versatility and price. Porsche Big Red calipers have a taller pad and require a larger rotor annulus (heavier rotor). While this taller pad sometimes lasts longer, for a given rotor and piston size the brake torque is less.
