BDX
BDX BD SPINDLE/A-ARM KIT A/C S/M W ITH BILLET UPPER A-ARMS 20063B
      BDX BD SPINDLE/A-ARM KIT A/C S/M W ITH BILLET UPPER A-ARMS 20063B. The Vendor part number is  20063B. Read title carefully to know what you are getting. Catalog description... 
  - Popular upgrade for 2012-2015 models when used with OEM 36" lower a-arms
 - 2 lbs less weight, one pound of less unsprung weight per side
 - Forged upper a-arms are very strong
 - Forged spindles are extremely strong and shorter than OEM - Less chance of hitting an obstacle
 - Lower mounting location for upper a-arms
 - Very cool custom look that works great too