ZEX Nitrous is a member of The COMP Performance Groupâ¢, which includes COMP Cams, FAST, and TCI to name a few. Founded in 1998 and based in Tennessee, ZEX designs and manufactures complete bolt-on nitrous systems, nitrous accessories, fuel system components, and spark plugs. They combine innovation with simple installation for optimized performance. ZEX strives to provide more efficient nitrous injection for horsepower gains without compromising engine safety. Shop JEGS.com for fast shipping and unbeatable prices on ZEX Nitrous products.