Nitrous Express 20939-00 Billet LT4 Supercharger Lid Nitrous System No Bottle

The Nitrous Express Billet LT4 Supercharger Lid provides a direct port nitrous injection solution for GM LT4 supercharged engines. This precision-machined replacement lid installs in place of the factory upper supercharger lid, delivering nitrous and fuel directly into each cylinder from within the supercharger assembly for optimal distribution and performance.

Key Features:

• CNC-machined from solid billet aluminum for exceptional strength and durability
• Direct port injection design delivers nitrous to each cylinder individually for consistent power gains
• Single stage system includes jetting for 100 to 300 wheel horsepower
• 1/8 NPT ports machined directly into the lid for easy expansion to water/methanol injection
• Direct bolt-on replacement for factory LT4 supercharger upper lid
• Clean, integrated appearance with all injection components concealed within the supercharger
• System does not include nitrous bottle (bottle sold separately)

This system is compatible with all GM LT4 supercharged engines and provides a simple installation process while maintaining the factory appearance. The internal injection design eliminates the need for external spray bars or manifold plates, making it ideal for applications where engine bay aesthetics matter.