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NOS PRO 2 Stage Nitrous Kit, Black [200-500 HP] (Holley 4150 & Carter AFB)

$1,358.95

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Fits Holley 4150 and Carter AFB (late), 200-500 HP, includes Black 10 lb Bottle
  • Includes 4150-flange 1" thick dual stage black aluminum plate with 4 spray bars
  • Offers steady and precise nitrous flow, fuel atomization, and mixture distribution
  • Includes jetting for 200, 250, 300, 370, 420 & 500 horsepower
  • Includes 2 Cheater Fuel and 2 Cheater Nitrous solenoids
  • Bottle is made from 6061-T6 Aluminum
  • Includes 10 lb. black nitrous bottle with brackets
  • Includes mounting hardware and instructions
To supply the proper amount of fuel to the carburetor and the Big Shot System, a fuel pump must be used that is designed to operate between 4.5 and 7 psi, with a flow rate of 0.1 gallons per horsepower at 6 psi. For example, an engine that produces 350 horsepower when the Big Shot System is activated will require a fuel pump that flows at least 35 gallons per hour at 6 psi.


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  • Model: 02301BNOS
  • FROM: NOS (Nitrous Oxide Systems)

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we added this on Monday 14 January, 2019.

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