ARK Performance R-Spec Hi-Flow Cats - Infiniti G37/Q40/Q50/Q60 & Nissan 370Z

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$ 859.00
$ 644.25
SKU HC0900-0010

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The ARK R-Spec Hi-Flow Cats are race spec designed free flowing catalytic converters to increase your horsepower and torque. Each Hi-Flow Cat is constructed with polished SUS304 stainless steel, thicker piping, and two O2 bungs. These Hi-Flow Cats utilize our Helmholtz style reservoir chamber technology to maintain smooth flow, a deeper tone with reduced drone, hiss, and rasp. ARK R-Spec Hi-Flow Cats are the perfect combination with any exhaust system you may have. 

ARK Advantages and Features:

  • All Bolt-on System 
  • SUS304 Stainless Steel Construction 
  • Fully Polished Finish 
  • CNC Machined Flanges 
  • High Flow Catalytic Converters 
  • ARK Signature Helmholtz Chamber 
  • Dyno Proven HP and TQ!


Vehicle Application

  • 2007-2009 Infiniti G35 Sedan RWD (V36)
  • 2008-2016 Infiniti G37/Q60 Coupe RWD (V36)
  • 2008-2016 Infiniti G37/Q40 Sedan RWD (V36)
  • 2013+ Infiniti Q50 RWD 3.7 and Hybrid
  • 2007-2008 Nissan 350Z (Z33)
  • 2009+ Nissan 370Z (Z34)



  • The R-Spec Hi-Flow Cats are recommended for off road use only. These only fit RWD models that are manual transmission.
  • Modifications by a muffler shop to the pipes required for AWD models. 

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