Stillen® (11-18) M37/Q70 304SS Cat-Back System
Stillen® (11-18) M37/Q70 304SS Cat-Back System


Stillen® (11-18) M37/Q70 304SS Cat-Back System

Regular price$1,149.73
Shipping calculated at checkout.
  • In stock, ready to ship
  • Free Shipping USA (Exc. HI, AK, PR)

Compatible: (3.7L)

2011 - 2013 Infiniti M37

2014 - 2018 Infiniti Q70 (V51)


Product Features

  • Near Cat-Back Exhaust System
  • 304 Stainless Steel Construction
  • Polished Stainless Tips, End Pipes and Mufflers
  • Mild at Idle/Cruising - Aggressive Note Under Throttle
  • Limited Lifetime Warranty



  • 14 WHP Increase (horsepower to the wheels)*
  • 13 WTQ Torque Gain*
  • Compliments the factory exhaust cut out nicely
  • Perfect solution for those who value a more luxurious and quiet cabin feel along with enhanced sound.
  • Delivers an aggressive look that matches the enhanced exhaust note.
*Results May Vary!


The STILLEN exhausts for the Infiniti M35, M37, M45, M56 series are a great example of our R & D work. Choose from Cat-back and rear section exhaust systems.

Each STILLEN Infiniti M Series exhaust systems is constructed of 100 percent mandrel bent tubing for optimal flow. T304 polished stainless steel is used in the Tips, End Pipes, and Muffler for long life and a sharp look. The straight through Mufflers are wrapped in exclusive Italian Granite Wool for durability and responsible sound levels.





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