Designed for smoother and quieter stopping, built for longer lasting, consistent braking performance. Dependable Quality: Manufactured with multiple alloys for improved heat dissipation and performance. Drilled and Slotted Front and Rear Brake Rotor Set (WHPN2-40010) by R1 Concepts®. Engineered for drivers who demand both performance and visual appeal... Headquartered in Los Angeles, California, USA. R1 Concepts Brake Components provide high-quality stopping power. For Ram 1500 Classic 19-23 Drilled & Slotted Front & Rear Brake R1 Concepts Performance Brake Parts 2018 Ram 1500 No Option Required WHPN2-40010 Front and Rear R1 eLINE Series Brake Rotors High Performance Brake Rotors: Made of G3000 grade cast iron with zinc finish for ultimate rust protection., Built with O., E. M specifications in mind, no modification required. Mill-balanced for proper rotor function. R1 Brake Kit R1 Concepts Drilled And Slotted Carbon Coated Disc Brake Rotor Set WBPN2-45010 High Performance Brake Discs Quality validated for proper metallurgy and correct brake plate thickness