ATI PERFORMANCE SUPER DAMPER Harmonic Damper [ALUMINUM SHELL | 5.5 OD | 3 RING | TOTAL WEIGHT 3.6 LBS | INERTIA WEIGHT 2.27 LBS | STEEL HUB WITH INNER SHELL | 4% UD] (Nissan 350Z & 370Z) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS