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  • Replaces the four restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance. Now includes provision for the factory OEM heat shield at the primary catalyst. In addition, we've included heat shielding for the secondary catalyst location.
  • Updated mounting brackets for your factory OEM heat shields.
  • Included heat shielding for the secondary catalyst.
  • Detailed view of the included heat shielding for the secondary catalyst.
  • Visual comparison between the factory catalytic converters and our less restrictive straight-through pipes
  • Image 6

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Acura NSX Twin Turbo Cat Bypass Pipes / Downtubes


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2017 ACURA NSX | Dyno (00:47)
2017 Acura Dyno with Fabspeed Catbypass Pipes, Maxflo Rear Exhaust & Deluxe Quad tips. ** Stock baseline - 449whp/477ft-lbs ** ** Catbypass/Muffler Bypass - 528whp/502ft-lbs ** +79whp/25ft-lbs over stock Alec Acuff | Exotic Car Performance Specialist Alec.Acuff@Fabspeed.com P: 267-742-3047 | F: 215-646-9828 Exotic Car Performance Specialists 155 Commerce Drive | Fort Washington, PA 19034 | USA www.fabspeed.com IG: Fabspeedalec

Product Description

Direct replacement bolt-on, precision crafted catbypass pipes to replace 4 small, restrictive OEM Ceramic Catalytic Converters. 


       • Direct replacement bolt-on, precision crafted pipes to replace 4 small, extremely restrictive OEM ACURA NSX TT Ceramic Catalytic Converters.

       • Provisions for the factory primary catalyst heat shielding, along with shielding for the secondary catalyst bypass 

       • Straight pipes are straight through for absolute MAXIMUM exhaust flow and lowest possible back-pressure,     

       • Very aggressive sports car south with prominent turbo spool and maximum turbo whistling and spooling sounds.

       • Save 27 pounds and 12 KG versus OEM NSX Catalytic Converters.

       • Precision designed, engineered and manufactured in USA using HAAS CNC, FLOW WATERJET,  and T304L Stainless Steel exhaust bellows.

       • NSX TT catbypass pipes/ downtubes come with all hardware and gaskets ready to install with front OEM NSX TT heat shields.


DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

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