Some competitors may consider these "Race Only"  control arms while we consider them Race Ready. Our double adjustable  lower control arms feature TIG welded fabrication, reinforced sway bar  holes and QA1 Endura Series Teflon lined spherical rod ends. When you  are looking for the maximal performance from your vehicle, you can't go  wrong with this setup. The spherical bearing rod ends operate for a  "bind" free operation when high handling is a concern and are designed  to eliminate rear-end bind found with rubber and polyurethane bushings.  This item also works excellent as a solid bushing drag race control arm  and is designed to with stand high amounts of torque and horse-power.  The TIG welded construction adds higher penetration for a much stronger  weld over the commonly used MIG welding process. Each control arm  features the correct provisions for adding a stock or aftermarket sway  bar. Sway bar holes are reinforced with a 0.120" wall thickness steel  sleeve TIG welded and sanded into place. The construction of the  control arms features 0.120" x 1.500" mild steel DOM tubing and each  end utilizes tube adapters, CNC machined from 4140 Chrome Moly to  ensure overall strength and improved thread durability; this is an area  other competitors use mild steel as a cost saver. The spherical rod  ends supplied with this setup include CNC machined aluminum step  bushings with steel sleeves to keep control arm centered in its  mounting location.      Features:    - Constructed of 0.120" x 1.500" DOM Steel Tubing  - 4140 Chrome Moly Threaded Tube Adaptors  - QA1 3/4" Hard Chrome Plated, Teflon/Kevlar Self Lubricating Race Rod End  - Complete Arm Features TIG Welded Construction  - CNC Machined 6061 Aluminum Step Bushings with Zinc Plated Steel Sleeves  - Quick On-Car Adjustability Using Right and Left Hand Threads  - Brilliant Durable Powder Coat