Hawk Performance Drilled and Slotted Rear Brake Rotor Set Audi A4 Convertible (2005) (HTC4489) 1973 1987 All Makes All Models Parts BB4035R 1973 87 Chevrolet C10 Front Drilled and Slotted Brake Rotors (Pair) SP Performance F55 092 Drilled and Slotted 1 Piece Rear Brake Rotors Front Drilled and Slotted Brake Rotors (Pair). Decades of experience, continuous research and development, and dedication to bringing the highest quality premium friction products have led to Talon Rotors. Leveraging the high quality performance of Hawk Performance's unique and proprietary DTC curved slot design, they are built to OE specifications, weights, and production processes, and are engineered to fit a vehicle's current braking system without modification. High Carbon Iron Rotors G3000 metallurgy superior automotive casting material Validated design and performance characteristics through extensive dynamometer testing All rotors are balanced with CNC programmed, precision milled slots to significantly reduce harmonic resonance issues, maintain a clean pad surface and expel away debris Salt spray tested per ISO 9227, exceeding the 240 hours requirement Proven cross drilled designs to optimize thermal efficiency, heat dissipation, strength, and improve wet braking Magni coating barrier applied that maintains superior corrosion resistance and ensures quick and easy bed in that resists galling Available in a cross drilled and slotted design or slotted only for heavy duty applications. Available in three designs: Talon Cross drilled and slotted High Performance Street rotors Talon Plus Slotted only Motorsports and Sports Car rotors Talon Super Duty Slotted only Heavy Duty Truck rotors