STILLEN 2016-2024 Infiniti Q50 [3.0T] Cat Back Exhaust System w/ Polished Tips - 504451

Enhance power, torque, and exhaust tone on your 2016–2024 Infiniti Q50 3.0T with the STILLEN Stainless Steel Cat-Back Exhaust System featuring Polished Tips. Engineered, dyno-tested, and manufactured in-house at STILLEN headquarters in Costa Mesa, California, this system delivers exceptional performance gains while maintaining refined street manners.

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*
• Polished Stainless Steel Exhaust Tips: Classic, OEM-plus appearance with premium finish
• Exhaust Tone: Mild and composed at idle and cruising, aggressive and authoritative under throttle
• 304 Stainless Steel Construction: Mandrel-bent piping for maximum flow and long-term durability
• Direct Bolt-On Installation: No cutting or welding required
• OEM-Compatible Fitment: Designed to complement the factory rear valance or STILLEN rear diffuser
• Precision Manufactured: Built and inspected multiple times in-house for perfect fit and quality
• Limited Lifetime Warranty: Backed by STILLEN’s industry-leading support

Exhaust System Design

• 2.5-inch Y-Pipe: Improves exhaust scavenging and airflow efficiency
• 3-inch Mid-Pipe: Reduces restriction to support higher horsepower output
• Dual 2.5-inch Rear Exit: Balanced flow to twin mufflers
• STILLEN Performance Mufflers: Tuned for maximum flow with controlled sound levels
• 4.5-inch Adjustable Polished Tips: Bolt-on design allows precise tip positioning for different bumpers or aero setups

Sound & Driving Experience

The STILLEN Q50 3.0T cat-back exhaust system preserves the luxury character of the Q50 during normal driving while unlocking a deep, aggressive exhaust note under acceleration. Increased exhaust flow improves throttle response, midrange torque, and overall engine efficiency, making the car feel stronger and more responsive throughout the powerband.

Why Choose STILLEN?

STILLEN has been a leader in Infiniti performance development since the brand’s inception. After extensive R&D and dozens of prototypes, this exhaust system was engineered to remove factory restrictions while retaining daily comfort, OEM-level fitment, and long-term reliability. The result is one of the most powerful and refined cat-back exhaust systems available for the Infiniti Q50 3.0T.

*Results may vary.