The ZEX™ Add-A-Stage Nitrous System upgrades any manufacturer’s single stage EFI nitrous kit to a two stage system. A two stage system is faster than a single stage system because it gradually adds the nitrous power in two separately controlled stages instead of one big, tire-spinning hit. The Add-A-Stage Nitrous System is operated by a push button switch for ease of control, and jets are included for adding an extra 50-250 horsepower.

• Tunable from 50-250 additional engine horsepower
• Fuel Shear™ technology injects enrichment fuel directly into the nitrous plume for better atomization
• Active Fuel Control™ adjusts fuel enrichment in accordance with bottle pressure
• Features a push button switch for perfect system control