DDMWorks ProBeam for Solstice / Sky
We often get the question of which brace should be done first to the car. Our Backbone brace and the Probeam really perform 2 different functions. The backbone is designed to stiffen the car torsionally and make a stronger platform for the suspension to work off of. On the other hand the Probeam works on the back of the cars suspension, mainly on the connecting beam that holds the rear differential. This beam flexes during cornering loads and when it does it also changes alignment on the back of the car, making the car feel unsettled in the back. The probeam stiffens this beam and therefore makes the back more solid and prevents these unwanted changes under cornering loads, making the car feel more predictable.
There has been debate back and forth on the forums and with our customers about which brace should be done first, most people end up doing both of them. The synopsis is that the probeam makes the back end feel more predictable and solid and the backbone makes the car feel more put together overall.
This improvement to the chassis does not make the ride any harsher than stock, just makes the car a more solid platform for the suspension to work off of, giving the car a ride like a more expensive vehicle.