BMR 08-17 Challenger Non-Adj. Upper Control Arms (Polyurethane) - RedLaunching harder, reducing wheel hop, and adding cornering consistency to your 2008 2017 Dodge Challenger is easy with upper trailing arms from BMR's suspension. Stock stamped steel control arms with soft rubber bushings deflect under load and absorb power instead of transferring it to the tires. BMRs polyurethane, non adjustable control arms for Challengers (UCA110) are manufactured from heavy duty 3 16 inch CNC laser cut, CNC formed steel plate.