The comp struts I had on before were from Rally Design. The TCA's i'm unsure were they came from, i'll check the Ral Des catalogue and see later, but they were far better engineered with the ajusters being in the middle so you could easily et a spanner to ajust them on a 2wd.. The Rall Des comp struts are hollow tube where as the CompBrake ones are CNC'd bar. TBH the CompBrake ones are probably a bit stronger, its just that with the fitting problems and incorrect fasteners , along with the fact we couldn't get a safe set up using a 4x4 cross member we felt that they didn't warrent the extra cost over the Ral Des ones. In fairness the Rall Des ones although made from tube performed great. I only managed to bend one in a drift accident involving a 9 inch curb lol It only bent the strut slightly, but it did snap the Ajs TCA in half.