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NOS Pro Shot Fogger "Upgrade Kit" Cheater Nitrous System - 4150 Holley Square Flange x 2

Pro Shot Fogger "Upgrade Kit" Cheater Nitrous System, Holley square flange 4150 x2. Does not include bottle

PART# 02021NOS

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The Pro Shot Fogger upgrade kits take your Pro Shot Fogger system and converts it into a two stage Pro Shot Fogger 2 kit. The dual stage feature allows the user to jet the first stage for traction off of the line, then in the second stage utilizing a Cheater spray bar plate, add maximum mid-range and top-end power. Through testing, NOS has optimized the jetting of the Pro Shot Fogger 2 upgrade kits for improved power and performance. Available in single four or dual four applications in either a Holley® Square Flange or Holley Dominator® bolt pattern, the Pro Shot Fogger 2 upgrade kits come complete with NOS new improved Cheater nitrous and fuel solenoids, Cheater spray bar plate(s), jetting and all the necessary hardware to upgrade your Pro Shot Fogger into a dual stage Pro Shot Fogger 2 system.


  • Fits Engines w/ (2) 4150 Flanges
  • This Upgrade Kit adds a Second Nitrous Stage to the Pro Shot Fogger Direct Port System


Emission Code4
Fuel SolenoidCheater
Included Jetting Horsepower100, 125, 150, 175, 200, 250
Jet StyleFlare
Max Horsepower250
Nitrous SolenoidCheater
Number of Plates2
Number of Solenoids2
Plate Flange4150
Product TypeNOS Upgrade Kit
System StyleWet
Part Number02021NOS



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

This kit does not include bottle NOS sells and supports a full line of competition NOS fuel system components.
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