After 1500 miles, my Rockshox Monarch rear shock started making a rattling noise. It still functioned, still I pulled it off my bike and replaced with a DNM Damping 2 System Mountain Bike Rear Shock Rebound/Preload Anodized Aluminum Alloy 6061 Coil Spring 750 lbs - 190mm.
I installed the new shock, set the preload and rode it. This is my first impressions.