VariShocks are built to withstand harsh competition conditions as well as the rigors of street duty. The shock bodies are constructed from heat-tempered aluminum for strength, rigidity, and heat dissipation. The bottom of the shock features a screw-on base cap. The internals are machined from aluminum alloy. The center rod is made from chromerod material and is exactly sized through centerless grinding. The piston diameter, according to Alston, is increased compared to other shocks to allow a broader range of adjustment.