Fits A5, X7, and all 98's The Genuine Vortex Mod SS is the most trusted and used cyclone feed upgrade in the world. It replaces the plastic internals that come from Tippmann, and ensures that your loader will never go down during a game. Truly a must have for anyone using a cyclone feed. The Lightening Rod will yield higher rates of fire, and increased air efficiency.The secret to the performance gains is that the Lightening Rod is made of anodized billet aluminum, and contains a self lubricating brass bushing. Less flexing and friction with each shot means better loading. The Q.E.P.H. is a forward and reverse exhaust tube. It exhausts the air in front the piston during the piston stroke and behind the piston at the end of the piston stroke. Venting the air in front of the piston in the early part of the stroke means that less pressure is needed to advance the loader and venting the air behind the piston allows the loader to return faster. Does NOT include cyclone feed system.