ATI PERFORMANCE SUPER DAMPER Harmonic Damper [OUTER DIAMETER 5.5 | SHELL MATERIAL ALUM | RIBS 5 & 4 | HUB MATERIAL STEEL] (SUBARU EJ20, EJ22 & EJ25) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS