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Part number: NX604
Product Details
Nitrous Express NX604 Gemini Twin Stage 6 Plate Conversion Kit Holley 4 bbl
Products specifications
Notes Works on the 4150 carburetor.
Quantity Sold as a kit.

Nitrous Express NX604 4150 4-BBL Gemini Twin Stage 6 Plate Conversion Kit (50-300whp) includes plate, connectors, jets and hp settings. Nitrous Express offers a complete line of conversion kits for all of the systems. Whether you're upgrading from a EFI single nozzle system to a plate system, or converting from another brand to one of Nitrous Express "Next Generation" nitrous systems, Nitrous Express has exactly what you'll need to make the conversion complete. All the conversions begin after the solenoids and include all the necessary hardware.

  • Include all the necessary hardware
  • All conversions begin after the solenoids
  • Exactly what you need to make your conversion complete
  • Improves perfomance and reliability
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The experience was wonderful. The ability to look up parts by the make, model, and year of my auto made it easy to find the right part. And getting a discount on shipping to encourage my purchase was awesome. I hope the parts all are correct for my vehicl
I was little worried when I made an order, because the price was too good to be true, and Autoplicity was new to me.
However, Autoplicity took only a business day to ship my item.
The item has been delivered, and I'm very happy with Autoplicity and the item itself.

Thank you Autoplicity for the great price and fast shipping!!!
Autoplicity had exactly the part I was looking for, for my SRT8 Challenger, at the best price I could find!
Good fare prices
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