This is a pair of Ultra Reservoir Shock Caps for X-MAXX®. X-MAXX® fans - Are you ready to take the Performance of your X-MAXX® to the Next Level? Introducing Pro-Line's Ultra Reservoir Shock Caps that fit directly onto the stock X-MAXX® shocks and transform them into fully functional Reservoir Shocks! The additional Reservoir provides more oil volume to your X-MAXX® shocks which results in cooler shock temps and improved shock consistency. The Reservoir Piston compensates for the volume of the Shock Shaft delivering Plush Performance over small bumps and large jumps just like full-scale shocks! The included Shock Cap, Reservoir, Piston and Bottom Cap have all been expertly CNC machined out of high grade Aluminum to exacting specifications to meet the demands of the enormous X-MAXX®. The included O-Rings provide the sealing you need and Delrin upper Pivot Balls are included for optimum performance. Transform the Performance of your X-MAXX® - Get Pro-Line's Ultra Reservoir Shock Caps now!