ATI Performance SUPER DAMPER Harmonic Damper [OUTER DIAMETER 6.78 5% OD | AVG WEIGHT LESS HUB 4.5 LBS | SHELL MATERIAL ALUM | RIBS 6] (2005-2010 CHRYSLER 6.1L & 426 HEMI) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS