AR8645XPR Rotors Power Stop Evolution Drilled And Slotted Brake Rotors - AR8645XPR ... - 4WP Performance Upgrade Rotors All drilled and slotted rotors (except for hub rotor assemblies) are silver zinc plated to resist rust. Up for sale is Power Stop 02-06 Cadillac Escalade Rear Evolution Drilled & Slotted Rotors - Pair AR8645XPR. The vendor part number is AR8645XPR The drilled and slotted design is our most popular performance rotor for street and day track applications. Evolution Performance Drilled and Slotted Vented 1-Piece Rear Brake Rotors (AR8645XPR) by PowerStop®. Quantity: 2 Per Pack. PowerStop drilled and slotted rotors give you the advantages of both drilled holes for cooling and slots to sweep away gas and dust Power Stop drilled and slotted rotors give you the advantages of both drilled holes for cooling and slots to sweep away gas and dust. 1988-1999 Chevrolet K1500 Brake Rotor - Power Stop AR8609XPR - Front Look great behind custom (or factory) wheels