ATI PERFORMANCE SUPER DAMPER Harmonic Damper [OUTER DIAMETER 5.5 (15% UD) | WEIGHT (WITHOUT HUB) 7.55 LBS | SHELL MATERIAL ALUM | RIBS 6 | HUB MATERIAL STEEL] (1996-2004 Mustang GT & SVT Cobra) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS