Q4: UMI's arms feature heavy-duty CNC-machined US steel, Cerakote coating for corrosion resistance, and longer arm geometry for precise alignment and improved durability. They are engineered for simple installation with included hardware and proven through rigorous fatigue, track, and load testing. A4: UMI's arms feature heavy-duty CNC-machined US steel, Cerakote coating for corrosion resistance, and longer arm geometry for precise alignment and improved durability. They are engineered for simple installation with included hardware and proven through rigorous fatigue, track, and load testing.

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