Using technology derived from Moto GP, these billet calipers come complete with rear brake pad material as used in World Superbike. The Black Supersport CNC Rear Caliper complements the .484 black series of front calipers, while the Nickel Supersport CNC Rear Caliper (shown) complements the GP4RX series. Both feature 2-by-34-millimeter pistons and are CNC machined from aerospace grade billet aluminum. The MSRP for the black caliper is $570 ($792 with aluminum bracket for Japanese models), while the nickel coated caliber rings in at $620 ($849 with aluminum bracket for Japanese models).