Product Overview
Already running the Nitrous Express Billet LT4 Supercharger Lid (NX939WN)? Complete the setup.
This hardline upgrade kit is designed specifically for customers who want to add the optional water-methanol system to their existing LT4 billet lid. Engineered for proper routing and clean integration, it delivers a purpose-built solution that installs correctly and looks as refined as the lid itself.
If you're pushing boost and looking for added charge cooling, consistency, and confidence, this is the upgrade that takes your LT4 combination to the next level.
Nozzles must be purchased separately.
