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STILLEN is proud to introduce the Competition Series Cat-Back Exhaust for the 2023-2024 Nissan Z. Designed for enthusiasts who demand an aggressive exhaust note, this system eliminates mufflers to deliver the raw sound of the Nissan VR30 twin-turbo V6. Through extensive testing, our engineers developed a high-flow, performance-optimized system that maximizes power, sound, and driving excitement.
Designed for Maximum Sound & Performance
Twin-turbo engines naturally suppress exhaust tone due to turbocharger design. The STILLEN Competition Series Exhaust overcomes this by offering a straight-piped, high-flow setup with an X-pipe design, creating an aggressive, race-inspired tone. This system provides the benefits of a precision-engineered exhaust at a competitive price while maintaining performance gains.
Key Features & Benefits
- Limited Lifetime Warranty – Built to last with premium materials
- 304 Stainless Steel Construction – Corrosion-resistant and durable
- TIG Welded Construction – Precision welds for maximum strength and aesthetics
- CNC Machined & Mandrel Bent Tubing – Ensures smooth airflow and optimal exhaust flow
- Dyno Tested – Proven power gains and improved performance
- Made in America – Manufactured in-house for superior quality control
Exhaust Design & Engineering
After rigorous testing, the optimal design was determined to include:
- Precision TIG-Welded Stainless Steel Flange – Connects seamlessly to dual 2.5-inch tubes
- CNC-Machined X-Pipe – Merges both exhaust banks for an aggressive, refined tone while maintaining unrestricted exhaust flow
- Optimized Exhaust Flow – Offers a cross-sectional area of approximately 4 inches, maximizing performance
- Lightweight, High-Performance Design – Eliminates mufflers for a true race-inspired exhaust note
Unlike traditional true dual exhaust setups, which can sound overly flat and loud on twin-turbo V6 engines, the X-pipe configuration enhances tone and sound depth while keeping exhaust flow unrestricted. Additionally, this design allows the largest possible collector to fit through the Nissan Z’s narrow center tunnel.
Finishing Touches
- STILLEN Branded Cross-Brace – Enhances rigidity and visual appeal
- Custom Exhaust Tip Options – Choose from polished stainless steel, burnt stainless steel, or carbon fiber for a personalized look
- Signature Welds & Burn Trail – Precision TIG welding leaves behind a multi-color burn trail and motorsport-inspired “stack of dimes” finish