Launching harder, reducing wheel hop, and adding cornering consistency to your 1979-2004 Ford Mustang is easy with upper control arms from BMR Suspension. Stock control arms with soft rubber bushings deflect under load and absorb power instead of transferring it to the tires. BMR?s polyurethane, on-car adjustable tubular control arms for Mustangs (UTCA015) are manufactured from heavy-duty 1 5/8 inch, 0.120-inch wall DOM steel tubing. The center adjuster is CNC-machined from chrome-moly steel with rolled threads for the ultimate in strength and durability. The arms feature TIG-welded chrome-moly tube adapters. This design gives you a strong control arm that greatly improves performance. Spherical bearings offer the highest levels of strength and articulation. When the highest levels of performance are required, BMR uses heavy-duty Teflon-lines Viking Performance spherical bearings.