AMS Performance VR30DDTT Street Full Downpipes

A Full 3″ Mandrel Bent Stainless Steel Solution with GESI Cats.


Available w/ Short Backorder Delay. Contact Sales Dept. for Latest ETA.


SKU ALP.28.05.0002-2 Categories , Brand:

California Residents: Prop 65 Warning

Additional information

Weight 18 lbs
Dimensions 36 × 16 × 7 in

Race / Competition / International Use Only

This product is designed for installation on a race-only vehicle, defined as a vehicle that is used exclusively for competition and that cannot be licensed or registered for use on the public roads and highways within the United States. This product is not available for sale on emissions-controlled vehicles within the United States without a completed AMS Race Waiver form. International users outside of the United States should act in accordance with their local laws and regulations.

2017+ INFINITI Q60 with 3.0L Twin Turbo VR30 | 2016+ INFINITI Q50 with 3.0L Twin Turbo VR30 | 2023+ Nissan Z (incl. all submodels)
FREE SHIPPING on all orders over $199.99 in the lower 48. (Exclusions Apply)

With 23 years of documented research and development in the forced induction field, AMS Performance has proven itself as the powerhouse in the automotive aftermarket. Our award winning performance systems are what all others are measured by.

AMS Performance VR30DDTT Street Full Downpipes are the best performing and most durable full 3″ mandrel bent units on the market. During testing our shop Q60 with our VR30 Full Downpipes, and Red Alpha Tune, our Engine Calibrators saw 20 horsepower gains over our VR30 Race Lower Downpipes! The power came on earlier and the twin turbo’s spool-up was significantly improved. The long gradual transitions within the mandrel bent pipe section allows exhaust gasses to maintain velocity without a buildup of back pressure inside of the system. We were able to design a superior product because of our superior engineering.

  • Big HP Gains Over Lower Downpipes
  • Full 3″ Stainless Steel Construction Including Brackets and Flanges
  • EPA Compliant High Quality GESI Catalytic Converters Rated to over 800 Horsepower
  • Included 2.5″ to 3.0″ Adapter Allows You to Run Either Stock Catback System or Aftermarket Systems
  • Mandrel Bent Tubing for the Best Exhaust Flow
  • Turbine Flange Offers a Smooth Transition from the Turbine Outlet into the 3″ Tube
  • Includes all Gaskets Rated to Over 800 Degrees Celsius and all Necessary Hardware
  • O2 Sensor Tubes Extend to Meet OEM Location. No Jumpers Needed
  • Throaty Exhaust Note Under Wide Open Throttle
  • Stock Like Fitment With No Chassis Clearance Issues
  • Precision Construction for Unrivaled Fit and Finish

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First in Class Durability and Performance From Proper Engineering

AMS is first and foremost an engineering company. The AMS Engineering team utilized Solidworks (3D software) to blueprint the inlet and outlets to optimize exhaust flow. The AMS Street Full Downpipes feature heavy gauge stainless steel to retain as much heat in the down pipe as possible. Our Engineers 3D printed the downpipes to ensure an OEM level of fitment. Our threaded O2 sensor bungs allow the use of factory O2 sensor. Our downpipes perform better and are not prone to cracking like the alternatives offered by some of the competition. AMS’ Engineering Team produced a product that doesn’t just perform better, they made it sound better too.

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High Performance GESI Catalytic Converters

Utilizing EPA compliant catalytic converters from industry titan GESI, our AMS downpipes for the VR30DDTT are the perfect solution for increased performance and OEM-like fitment and emission control.

“Our universal line of G-Sport Emissions Systems Catalytic Converters are designed to support the growing high performance aftermarket. To simplify your decision, our converter models target applications based on vehicle horsepower and exhaust sizing. Our High Output (HO) target up to 500 hp per exhaust bank, while our Ultra High Output (UHO) support up to 850 hp per exhaust bank.”


  • EPA Certified for use on OBD1/OBD2 Vehicles (1996 or newer)
  • 304 Series Stainless Steel construction throughout
  • G-Sport triangle cell design reduces back pressure and maximizes flow
  • Double-Lock technology ensures substrate is locked in place
  • Proprietary precious metal wash coat delivers consistent emissions reduction
  • Ideal for forced induction and capable of withstanding up to 1500 deg F


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AMS Performance VR30DDTT Street Full Downpipes Include

  • 3″ 304 Stainless Steel Downpipes
  • GESI EPA Compliant Catalytic Converters (Integrated)
  • 3″ Exhaust Gaskets
  • 3″ to 2.5″ Cat-back Adapter Plates
  • All Necessary Installation Hardware


  • 2017+ INFINITI Q60 with 3.0L Twin Turbo VR30
  • 2016+ INFINITI Q50 with 3.0L Twin Turbo VR30
  • 2023+ Nissan Z (incl. all submodels)

Product Notes

  • Further catalyst EPA compliance data available from the manufacturer HERE

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