“Maintaining a full range of motion, the direct-fit upper control arms expand caster angles and improve ball joint pivot angles for more straight-line stability and greater wheel travel when the trail gets rough — all while providing greater strength and toughness,” the company reports.
The new control arms are designed to work with Bilstein’s 5100 RHA, 6100 RHA, 6112 and 8112 suspension packages.
The B8 upper control arms are produced in 4130 chromoly tubular steel, Bilstein said, and are MIG-welded with formed steel bushing gussets for superior strength.
“People want to replace UCAs for two reasons — alignment correction and improved front end durability,” Shane Casad, head of Bilstein product management, is quoted in the company’s news release. “We often get the question, ‘What arms should I use with Bilstein 5100 RHA, 6112 or 8112 dampers?’
“These UCAs give customers peace of mind, knowing they can buy a control arm that will fit perfectly with any of our damper packages.
“Chromoly tubular construction is much stronger than OE stamped steel, while urethane inner pivot bushings are more rigid and offer precise handling.”