Part Number: AR8390XPR. Evolution Drilled/Slotted Zinc Plated Rotors (Pair). Corrosion Resistant Gold Zinc Plating. Style: Drilled And Slotted. Power Stop drilled and slotted rotors provide a bolt-on upgrade for improved brake cooling and performance Drilled Slotted Rotors Power Stop AR8390XPR Power Stop Evolution Drilled And Slotted Rotors Drilled And Slotted Brake Rotors Evolution Performance Drilled and Slotted Vented 1-Piece Front Brake Rotors (AR8390XPR) 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 Slots keep a clear contact patch between the pad and the rotor , Increased braking performance Front Brake Rotor Set - 2015-2022 Ram ProMaster City Look great behind custom (or factory) wheels