The DBA 5000 Series cross-drilled front rotor for 2006–2010 Jeep Grand Cherokee SRT8 is a two-piece direct-replacement rotor combining high-carbon cast iron rings with aerospace-grade aluminum hats held by NAS bolts. The XD variant uses non-directional cross drilling and dimpling for added structural support and better cooling than HD, offering lighter rotating mass and improved heat control for intensive driving.
DBA 06-10 Jeep Grand Cherokee SRT8 Front 5000 Series Cross Drilled Rotor w/Black Hat