The Fox Shock Pump is a high-pressure machine that's designed to fill shocks quickly and precisely. This pump is an essential tool to properly service and maintain air forks and rear shocks.. Features. • Durable stainless swivel pump head (UP-SA) allows for pump to access shocks where linkages would get in the way with a traditional pump head. • Max. pressure 350PSI covers all shocks. • 6063 aluminium barrel and handle. • Micro-adjust 2-3 PSI air-bleeder. • Foldable hose.