All convertibles have an inherent weak center section in the middle of the car between the front of the door opening and the back of the door opening. This weakness is because the section height of the car is the smallest at that point compared to other parts of the car. The entire section height of the car is only as high as the top of the center tunnel of the car. The shorter this section height of the car is, the more prone it is to twisting and bending. If you compare the short section height of a regular modern sedan that extends all the way to the roof of the car to our car, you can see how much shorter of a section height we are dealing with as a convertible, and also why modern sedans are stiffer than convertibles.
For those that are not familiar with it, the center tunnel of the car is an upside down "U" shape channel that has the drive shaft and exhaust running through it. GM boxed in this "U" channel with a stamped steel piece that is ".060" thick that runs right down the middle of the car. When you remove it from the car to install our Aluminum DDMWorks Backbone brace, it becomes pretty obvious how flimsy the stock piece is. You can easily bend and twist this piece compared to the backbone brace. There is no weight advantage with the new piece it is actually heavier than the stock piece. The real advantage of the DDMWorks backbone brace is that you are stiffening up this short section height "U" channel and making the chassis stiffer allowing the suspension to work better and not twist as much. Some people with added power have actually cracked windshields on the car because of the chassis twisting.
Once we installed the first prototype on the car it was immediately obvious that we improved the torsional rigidity of the car after a short drive down the road, the car responded quicker and took a set into a turn quicker. With this brace and the Pro-beam on the car the handling difference is very noticeable from a stock car. Where the stock car feels slow to react, cars with both the Pro-beam and the backbone are faster to react to turns and feel much more solid. Replacement bolts are an option for use with the 3/8" version of the backbone, these longer bolts are needed for installation with all 1/2" versions. (Please note: these longer bolts can not be used with the 1/4" version of the backbone.)
This brace offers an improvement of 30% over stock. This improvement to the chassis does not make the ride any harsher than stock, it 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.
- Fits: 2006+ Pontiac Solstice and Saturn Sky
- Made from 6061 Aluminum
- Stiffens up short section height "U" channel and making the chassis stiffer
- Allows suspension to work better and not twist as much
- 30% improvement over stock
- Installation note: torque specs are 13-15 ft lbs of torque
- Base 1/4" and Performance 3/8" are solid pieces
- Race/Track 1/2" version has cut-outs allowing it to weigh the same as the solid Performance 3/8" version but with added stiffness
WARNING:This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.