ATI PERFORMANCE SUPER DAMPER Harmonic Damper [OUTER DIAMETER 8.074 (20% OD) | WEIGHT (WITHOUT HUB) 12 LBS | SHELL MATERIAL ALUM | RIBS 10, 6 A/C | HUB MATERIAL STEEL] (FORD 5.0L COYOTE & 2012-2013 Mustang Cobra Jet) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS