UMI Performance 59-64 GM B-Body Adjustable Upper Control/Trailing Arm inBanana Arminin

If you're looking to dial in the rear suspension on your 1959-1964 Chevrolet Bel Air, Biscayne, or Impala, these adjustable upper control arms from UMI Performance are a solid option. They're designed to replace your factory arms and help reduce that annoying wheel hop you might experience under hard acceleration, while also improving how the car handles through corners and maintaining consistency on the track.

What's really handy about these is the on-car adjustability. This means you can tweak your pinion angle without having to take the arm back off the car, which saves a lot of time and hassle. They're built with grease-able Energy Suspension polyurethane bushings for smooth operation and longevity, and the main body is constructed from strong TIG welded tubing. The adjuster itself is made from heat-treated 4140 Chrome-Moly, a tough material that can handle the stress. UMI also finishes these with a durable powder coat and they're often called "Banana Arms" because of their shape.

Keep in mind that these are sold individually, and depending on your specific engine and rear suspension setup (like a 3-link or 4-link), you might need one or two of these arms. It's always a good idea to check what your car came with from the factory.