Flashark High-Flow Racing Downpipe for 2017+ INFINITI Q60 / 2016+ INFINITI Q50 VR30 3.0L Twin Turbo

The VR30DDTT twin-turbo 3.0L V6 is the heart of Infiniti's performance lineup — and from the factory, it's leaving serious power on the table. The stock downpipe routes exhaust through a tightly packed catalytic converter with a crush-bent neck-down that chokes flow at the most critical point in the entire exhaust system: right where the turbo meets the rest of the exhaust. That restriction raises exhaust gas temperatures (EGTs), slows turbo spool, caps midrange torque, and puts a ceiling on what your tuner can safely extract from the VR30.

This Flashark 2.625-inch (66.5 mm) catless downpipe replaces the factory downpipe from the turbo outlet flange to the mid-pipe connection. Constructed from 201 stainless steel with precision mandrel bends that maintain full internal diameter through every curve — no crimps, no neck-downs, no turbulence pockets. The polished stainless finish provides lasting corrosion resistance and a clean, professional look under the car.

The result is immediately noticeable: both turbos spool faster from a stop, midrange torque from 2,000 RPM gains a punch that the stock pipe chokes off, and the twin-turbo V6 exhaust note opens up to a deep, aggressive tone without cabin drone. When paired with a tune from Z1 Motorsports, Cobb, Ecutek, or UpRev, expect 15–25 wheel horsepower over a stock-downpipe tune alone.

This is a race-inspired performance part. It removes the factory catalytic converter and requires an ECU tune to operate without diagnostic codes. For off-road and competition use only — check your local regulations before purchasing.

Key Features

2.625" (66.5 mm) Mandrel-Bent Stainless Steel Tubing — Full 2.625-inch inner diameter from turbo flange to mid-pipe outlet. Smooth mandrel bends eliminate the crush-bent restrictions found on the factory downpipe, delivering measurably faster exhaust gas velocity and reduced backpressure across the entire RPM range. The larger diameter compared to the stock allows each VR30 turbo to exhale more efficiently

Catless Design (Race-Off-Road) — Removes the factory catalytic converter entirely. The OEM cat is the single largest flow restriction in the VR30 exhaust — eliminating it drops backpressure significantly, which directly translates to faster twin-turbo spool, stronger midrange torque, and higher peak horsepower with a proper ECU tune

Pre-Welded O2 Sensor Bungs — Oxygen sensor mounting points are pre-welded into the downpipe for plug-and-play installation of factory sensors. No welding, no drilling, no guessing sensor placement — thread in your factory O2 sensors and connect

Precision TIG Welding — Every joint is TIG-welded for full penetration and long-term durability at extreme exhaust temperatures. No MIG tack welds, no weak points that crack after thermal cycling — built to withstand repeated heat cycles from daily-driven and track-use vehicles alike

OEM-Style 3-Bolt Flange — Direct bolt-on replacement using the factory mounting points. No modifications, no adapter plates, no cutting required. The flange surfaces are machined flat for a leak-free seal against the turbo outlet

Polished Stainless Steel Finish — Professional polished finish looks clean under the car and resists corrosion from road salt, moisture, and thermal cycling. Solid stainless through and through — not a painted or coated mild steel pipe

Complete Hardware Kit Included — Every gasket, bolt, and nut required for installation is in the box. No trips to the hardware store, no sourcing missing parts — open the box and install

Direct Bolt-On Installation — Designed to bolt directly to the factory turbo outlet flange and connect to the stock or aftermarket mid-pipe. No cutting, no welding, no fabrication needed. Average install time is 2–4 hours with basic hand tools

Warranty & Support

Flashark Warranty: 2-Year Limited Warranty

We stand behind our products. This downpipe is covered against manufacturing defects for 2 years from the date of purchase.

Warranty Coverage:

• ✅ Material defects
• ✅ Welding failures
• ✅ Fitment issues

Not Covered:

• ❌ Damage from improper installation
• ❌ Normal wear and tear
• ❌ Corrosion from harsh environments
• ❌ Damage from accidents or abuse

Customer Support:

• Email: support@flasharkracing.com
• Response Time: Within 24 hours
• Installation Support: Available