Nitrous Express Nitrous Kit w/Billet LT4 Supercharger Lid w/12lb Bottle - 20939-12Find parts that fit my vehicle

This Billet LT4 Supercharger Lid replaces the upper supercharger lid on all GM LT4 Superchargers for a quick and clean install. Nitrous and fuel are injected into each cylinder from inside of the supercharger lid, providing direct port style distribution. Systems come standard as a single stage with jetting for 100 to 300WHP. This lid is made from a solid piece of billet aluminum with 1/8NPT machined directly into the lid, which makes it easy to add a direct port water/methanol later on.

Forced induction components mainly consist of supercharger or turbocharger parts that are used to make significant power gains on your vehicle. If you are looking for a significant increase in horsepower, look no further than forced induction.

Nitrous systems are a simple way to give your vehicle a little boost of power.

We started NX in 1996 because we knew we could offer nitrous systems that outperformed anything on the market right out of the box. Nitrous Express had an advantage; we got to start with a blank sheet of paper. We were able to manufacture our components with all the hot rod modifications built in. This allowed our customers to achieve better results right out of the box than other racers who were paying big money to modify our competitors parts. It was like a breath of fresh air! We spent the next 22 years perfecting our nitrous products while expanding our product line to include some really awesome NX nitrous and water methanol products.