ZEX Nitrous' Perimeter Plate Nitrous Systems provide optimum nitrous and fuel atomization for maximum horsepower. These complete kits offer top-notch spray effeciency with outlets placed at 12 injection points around the perimeter of the intake manifold opening, delivering precise distribution of both fuel and nitrous for your engine. Through an ingenious cooling technology called Cryo-Sync, super chilled nitrous is injected through the ZEX plate before being injected into the engine. This rapidly cools the carburetor and intake manifold, generating even greater power.  Perimeter Plate Nitrous Systems are tunable from 100-300 horsepower and are available for square and dominator 4-bbl carburetor applications.