Brembo fronts have 2 different piston sizes: 38mm and 44mm pistonsStoptech fronts have 2 different piston sizes: •83.131.4600.xx Front 332mm x 32mm has 38mm and 42mm pistons •83.131.4700.xx Front 355mm x 32mm has 36mm and 42mm pistons The larger setup actually has a smaller piston diameter vs the smaller versions, Stoptech claims it is necessary to reduce piston size when the rotor diameter changes. Lots if info on them here. That would make LJ's assessment correct. Again. As usual.
Cheers, JBrobst "A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing." George Bernard Shaw |