STILLEN 2016-2024 Infiniti Q50 [3.0T] Cat Back Exhaust w/ Carbon Fiber Tips - 504450

Unlock serious power, torque, and sound from your 2016–2024 Infiniti Q50 3.0T with the STILLEN Stainless Steel Cat-Back Exhaust System featuring Carbon Fiber Tips. Designed, engineered, and manufactured in-house at STILLEN headquarters in Costa Mesa, California, this system delivers class-leading gains while preserving refined daily drivability.

Confirmed Vehicle Fitment

• 2016–2024 Infiniti Q50 3.0T (Twin Turbo V6)
• Rear-Wheel Drive and All-Wheel Drive models
• Non-Hybrid models only

Key Features & Benefits

• Dyno-Proven Power Gains:
  • +26.3 WHP @ 4,680 RPM*
  • +29.5 WTQ @ 4,680 RPM*
• Carbon Fiber Exhaust Tips: Lightweight, aggressive appearance with premium finish
• Exhaust Tone: Mild and composed at idle and cruising, aggressive and authoritative under throttle
• 304 Stainless Steel Construction: Fully mandrel-bent piping for optimal exhaust flow and durability
• Direct Bolt-On Installation: No cutting or welding required
• OEM-Compatible Design: Fits perfectly with factory rear valance or STILLEN rear diffuser
• Precision Engineered: Designed and manufactured in-house with multiple quality inspections
• Limited Lifetime Warranty: Backed by STILLEN’s long-term reliability guarantee

Exhaust System Design

• 2.5-inch Y-Pipe: Improves exhaust scavenging and airflow
• 3-inch Mid-Pipe: Reduces restriction and supports higher horsepower output
• Dual 2.5-inch Rear Exit: Balanced flow to twin mufflers
• STILLEN Performance Mufflers: Engineered for maximum flow with controlled sound levels
• 4.5-inch Adjustable Carbon Fiber Tips: Bolt-on design allows precise positioning regardless of bumper or aero setup

Sound & Driving Experience

The STILLEN Q50 3.0T cat-back exhaust delivers a refined tone during normal driving, maintaining the luxury character of the Q50. Under acceleration, the system transforms the car with a deep, aggressive exhaust note that highlights the twin-turbo V6’s performance. Increased exhaust flow improves throttle response and delivers a noticeable surge in midrange torque.

Why Choose STILLEN?

STILLEN has been synonymous with Infiniti performance since the brand’s inception. After dozens of prototypes and extensive dyno testing, this exhaust system was optimized to remove factory restrictions while retaining drivability, comfort, and OEM-level fitment. The result is one of the most powerful and refined cat-back exhaust systems available for the Q50 3.0T.

*Results may vary.