MotoGP and World Superbike both used these billet monoblock Brembo calipers.  Vented titanium pistons, titanium retaining pins and sintered race pads.  Calipers are no longer available and have been out of production for several years.  Calipers were close to $6000 new and pads were $450 for the complete set.

Comes with titanium caliper bolts and spacers to run 320mm rotors.  That's an additional $200 in parts included.