Rockshox High Pressure Fork & Shock Some of the current rear shock offerings on the market, such as the Rockshox Boxxer World Cup, require an air pressure above 300psi. The Rockshox High Pressure Fork and Shock pump, which is capable of reaching up to 600psi, is purpose built to meet these requirements. It has a rotating hose which can make getting to the valve and putting the gauge in a good line of site much easier. Specifications : Up to 600 psi 360 Degree rotating pump Air Pressure release valve Thread on attachment Aluminum barrel | Rockshox | High Pressure Fork & Shock Pump Hp Suspension Pump