** The results shown are based on independent testing conducted by B83 Testing & Engineering, Inc. on ball joints for a 2007 Toyota Camry, 2013 Ford F-150 and 2007 Chevrolet Silverado. Testing was performed on a Multi-Axial Durability Suspension Simulator to simulate ball joint service life on a vehicle.

MAS, Centric and Mevotech Supreme claim “OE or better” but when put through independent metallurgical testing, they failed.

^{* Results shown are based on independent testing conducted by St. Louis Test Laboratories, Inc. and analyzed by Anderson & Associates, Inc. on studs in ball joints for the 2007 Toyota Camry, 2013 Ford F150 and 2007 Chevrolet Silverado in accordance with ASTM 415-15, ASTM E340-15, and ASTM E18-16 standard test methods. MOOG, MAS, Mevotech Supreme and Centric ball joint stud metallurgy was compared to the OE (original equipment) stud metallurgy. Stud metallurgy was analyzed by evaluating chemical composition, heat treatment, shot peening and the impact of those factors on stud fatigue life.}