Nitrous and Water Methanol System with Billet LT4 Supercharger Lid 12LB Nitrous Express NX 20939BMF-12 - USA-NX-20939BMF-12 - Nitrous and Water Methanol System with Billet LT4 Supercharger Lid 12LB Nitrous Express Billet Aluminum LT4 Supercharger Lid is CNC Machined and anodized in black for the ultimate in looks and corrosion resistance. This Billet LT4 Supercharger Lid replaces the factory supercharger lid on GM LT4 supercharger for a quick and easy install. The improved airflow design of the lid adds up to 25 Horsepower by itself and is able to increase power even further when the nitrous and/or water-methanol injection systems are activated. The spray bar-less nitrous system injects nitrous and fuel directly at each intake port providing direct port-like distribution ensuring maximum performance. As mentioned, this system is a "spray bar-less" design, which means that the nitrous/fuel passages are CNC machined into the lid itself. The 8 side ports allow for the water-methanol to be evenly distributed and provide the most benefit available. The lid is capable of supporting anywhere from 100 to 300 Wheel Horsepower.  Nitrous System Includes: Lightning Series Billet Aluminum and Carbon Fiber Solenoids Industry Exclusive Billet Aluminum Lightning 500 Bottle Valve Stainless Steel Braided Lines Stainless Steel Bottle Brackets All wiring/Switches/Hardware Necessary Jetting for 100-300 Wheel Horsepower If you have an aftermarket engine management system that is capable of adding nitrous enrichment fuel and want this system DRY (no fuel components), please contact us Water-Methanol System Includes: Billet Aluminum and Carbon Fiber Water/Methanol Solenoids High-Pressure Electric Pump Stainless Steel Braided Soft Lines Pre-Bent Stainless Steel Hard Lines Filtered Nozzles Plated Fittings Composite Reservoir All Wiring/Switches/Hardware Necessary Nitrous Express Stage 2 Digital Progressive Water/Methanol Controller THE NITRO BOTTLE IS EMPTY! Instructions PDF