STILLEN 2003-2009 Nissan 350Z [Z33] Stainless Steel Exhaust Systems - 504350D

Enhance the sound, performance, and appearance of your Nissan 350Z with the STILLEN Stainless Steel Dual Cat-Back Exhaust System. Designed using STILLEN’s extensive experience with the VQ35 platform, this exhaust unlocks hidden horsepower while delivering a refined, drone-free sound profile perfect for daily driving or spirited use.

This system features mandrel-bent stainless steel piping, precision-tuned mufflers, and polished dual-wall exhaust tips, providing a noticeable performance increase without sacrificing cabin comfort.

FITMENT

This exhaust system fits ONLY the following vehicles:

• 2003–2009 Nissan 350Z (Z33)
• Engine: 3.5L VQ35DE / VQ35HR
• Body Style: Coupe & Roadster
• Exhaust Type: Cat-Back (bolts to factory catalytic converters)

CARB-EXEMPT / 50-State Legal
Compatible with factory emissions equipment

Performance Benefits

• Up to +16 WHP (Wheel Horsepower)*
• Up to +14 ft-lbs Torque*
• Improved throttle response and exhaust flow
• Mild, refined tone at idle and cruising
• Aggressive exhaust note under throttle
• No annoying drone
• May improve fuel efficiency under normal driving

Sound & Driving Experience

The STILLEN 350Z exhaust delivers the perfect balance of aggression and refinement. At low RPM and highway cruising, the exhaust remains calm and comfortable — ideal for long drives and daily use. Step into the throttle, and the system comes alive with the signature STILLEN tone: deep, sporty, and unmistakably performance-oriented.

This exhaust also complements the factory rear exhaust cutout beautifully, enhancing both sound and visual appeal.

Premium Construction

• 304 Stainless Steel Construction for long-term durability
• Mandrel-bent piping for smooth, unrestricted exhaust flow
• Polished stainless steel mufflers
• 4.5” Polished 304 Stainless Steel Dual-Wall Tips
• Dual rear exit design for an aggressive, factory-plus look

Built to last and designed to perform — this is an exhaust you install once and enjoy for years.

Warranty & Compliance

• Limited Lifetime Manufacturer Warranty
• 100% CARB Legal – emissions compliant in all 50 states
• Does NOT void factory warranty (cat-back systems cannot legally void manufacturer warranties)

The Fine Print

Horsepower and torque gains vary depending on vehicle condition, modifications, fuel quality, and dyno type.