Front Upper Negative Roll Tubular Control Arms (Brass Bushings) 1984-87 Grand National Turbo- part # CNR-88B

Race ready, street approved!

What is a Negative Roll suspension system?

A Negative Roll system is a combination of suspension components and a pickup point relocation that changes the geometry curve of the suspension, so that negative camber will be induced as the tire goes up into the fender. In this case, for A and G body applications, it’s only a component change that’s required. This is not used in drag race application. (See TLC or G-Plus applications for drag racing.)

Note: negative camber refers to the suspension tilting the tire in towards the engine as the tire moves up into the fender. Positive camber would be the opposite. The tire would be tilting out of the fender as the it moves up into the fender. Almost all production cars have positive camber gain.

Why would I want Negative Roll?

If you are serious about bringing your car up to today’s standards, a negative roll system will be your first step. Negative Roll geometry keeps a greater portion of the tire on the pavement through the turn, increasing the cars cornering ability. Vehicle response and handling is dramatically improved especially during corner entry.

What is required to convert to a Negative Roll system?

In order for A-bodies to convert over to a Negative Roll system, four components are required. Tall GM spindles, special tubular upper control arms, machined lower ball joints, and different outer tie rods are required. Why? Because the donor cars spindle tapers are different. G-bodies only require tall GM spindles and special tubular upper control arms. Spindle tapers for this conversion are the same as the standard shorter spindle.