Shock Boss V2 - Portable Nitrogen Shock Tuning KitNew and improved! The Shock Boss V2 is the latest version of the industry's favorite on the go shock service kit. It will inflate shocks and bump stops up to 400 psi and all of the tools fit into a heavy duty ABS case to keep parts organized and clean. The kit should fill 20 40 shocks or bump stops on a charge. NEW! Heavier duty dust and water resistant lockable case NEW! All kits now come with a Schrader valve extension as standard NEW! All Shock