The arms picture are for road and moderate track day use, As mention eslewhere there are tubualar arms available for competiton use. The arms pictured are modified using thick wall cds500 tubing and they protrude well into the OEM arm strengthening it further from standard.
One point I'd like to make clear is that with the competiton arms they are design to Bend over Breaking, Its not good if people using our product dont finish there event and you also need to look at the servicable aspect of which if the arm is super strong they the beam will bend and if we make the beam very very strong the mounting points get efected resulting in shell damage, Its good to design a weak point WITHIN reason. I'm glad you brought this up though and I'd like to hear more of what your doing with your car and the events in which you've broken arms. I like to see my product proven!!