EXT (Extreme Racing Shox) is an Italian suspension manufacturer based near Vicenza, founded by mechanical engineer Franco Fratton, whose career included motorsport suspension work in Formula 1, World Rally and MotoGP. The company entered the mountain-bike market in the mid-2010s and tunes each unit individually to the rider's bike, weight and riding style.

Its range centres on high-performance coil and air rear shocks and enduro/downhill forks, including the Storia coil shock, the e-bike-specific e-Storia, the ERA fork and the Aria platform.