This a set of Big Bore Scaler Shocks, designed specifically for the TRX-4M™. Take your TRX-4M™ to the next level of performance in Pro-Line Style! Just like our best-selling 1/10 version, these miniature Big Bore Scaler Shocks feature CNC machined Aluminum Shock Caps, Threaded Bodies, Bottom Caps, and Polished Steel Shock Shafts for added style and durability over the stock shocks. A double O-ring seal on the main shaft eliminates leaks and provides a smooth, low-friction shock action.