AMS Alpha Performance Street Lower Down Pipes (GESI Catalytic Converters) Fits Infinti Q50/Q60, Nissan Skyline 400R RV37 & Nissan Z RZ34 (VR30DDTT)AMS.53.05.0001-2

The AMS Performance VR30DDTT Street Lower Downpipes are crafted for those who demand excellence in both performance and emissions compliance. Utilising advanced engineering techniques, our SnailWorks© team employed 3D CAD software to design these downpipes with full 3″ mandrel-bent stainless steel tubing, ensuring superior exhaust flow and improved boost response and turbo spool up.
The ultra-high output GESI catalytic converters, compliant with EPA regulations and capable of supporting up to 850 HP each, provide a perfect blend of catalyst efficiency and the removal of exhaust back pressure within the system. Engineered for a flawless fit and long-lasting durability, these downpipes offer innovation and precision in every detail, making them an ideal upgrade for high-performance enthusiasts.

• EPA Compliant Ultra High Output GESI Catalytic Converters Rated to 850 HP Each
• Full 3″ Mandrel Bent Stainless Steel Tubing for the Best Exhaust Flow
• Precise CAD Designed Brackets for Unrivalled Fit and Secure Mounting
• Included 2.5″ to 3.0″ Adapter Allows for Compatibility w/ Stock, 2.5″, or 3″ Exhausts
• Subdued Exhaust Note Perfect for Taming Loud Cat-Back Exhausts
• Includes all Gaskets Rated to Over 800 °C and all Necessary Hardware for Installation

First in Class Durability and Fitment From Proper Engineering

AMS is first and foremost an engineering company. The VR30DDTT Street Lower Downpipes were designed using Solidworks© 3D CAD software by our SnailWorks© Engineering Team to be the best performing on the market.
Our engineers utilised 3D scans and computer-aided design to blueprint the inlet, outlet, and mounting locations to optimise exhaust flow via mandrel-bent full 3″ tubing. Utilising 3D printed prototypes, our team was able to install and test fit and then rapidly refine our geometry in CAD resulting in perfect OEM-like fitment. Even the small details have been considered, including our robust integrated mounting brackets that allow the exhaust to be secured to the chassis. These brackets reduce flex and mean your pipes are not prone to cracking like the cheap alternatives offered by some of the competition.
Our engineering mindset and attention to detail in the design of the new VR30DDTT Street Lower Downpipes are what set it apart from everything else on the market.

Ultra High Output GESI Catalytic Converters

The GESI G-Sport catalytic converters integrated into the AMS Performance VR30DDTT Street Lower Downpipes offer exceptional performance and reliability.
These 304 series stainless steel constructed converters are EPA compliant, ensuring they meet stringent emissions standards while delivering superior exhaust flow. Featuring a 300 CPSI cell count and a G-Sport triangle cell design, they effectively reduce back pressure, maximising performance.
The Double-Lock technology securely locks the substrate in place, and the proprietary precious metal wash coat guarantees consistent emissions reduction. Designed to withstand temperatures up to 1500°F, these catalytic converters are ideal for forced induction applications, providing the perfect balance of durability and efficiency within the exhaust system.

“Our latest updates to our line of Advanced Series G-Sport Catalytic Converters expand our proven core technology to better support the growing high-performance aftermarket.
Our converter models target applications based on model year, vehicle horsepower and exhaust sizing. Our new Advanced Series is reinforced with our proven S-Wound Core and supports up to 850hp per converter.”

Vehicle Compatibility:

- Infiniti Q50 Sedan 3.0L Twin Turbo 2016+ (VR30DDTT)
- Infiniti Q60 Coupe 3.0L Twin Turbo 2017+ (VR30DDTT)
- Nissan RV37 Skyline 400R 3.0L Twin Turbo (VR30DDTT)
- Nissan RZ34 Z 3.0L Twin Turbo (VR30DDTT)