Description
The STILLEN Cat-Back Exhaust System for the 2013–2015 Nissan Altima Sedan 3.5L (L33) is designed to deliver increased horsepower and torque while enhancing your vehicle’s exhaust tone. This complete cat-back system replaces the factory exhaust from the catalytic converters back, improving flow and delivering a smooth yet aggressive performance sound.
The system is engineered to provide a mild note at idle and cruising, with a more aggressive tone under throttle, making it suitable for both daily driving and spirited performance use.
Constructed from high-quality stainless steel, the system features polished stainless steel mufflers, end pipes, and tips, ensuring durability, corrosion resistance, and a premium factory-integrated appearance. Installation is simple with direct bolt-on fitment using existing factory mounting points. The system is backed by a limited lifetime warranty, giving you peace of mind and long-lasting performance.
Vehicle Fitment
Nissan
-
2013-2015 Nissan Altima Sedan 3.5L
Fitment Notes
- Fits 3.5L V6 Sedan models ONLY
- Does NOT fit 2.5L models
- Does NOT fit Coupe models
- Complete cat-back exhaust system
- Direct bolt-on installation using factory mounting points
Features & Benefits
- Increases wheel horsepower and torque
- Enhances exhaust flow over stock system
- Mild at idle and cruising, aggressive under throttle
- Perfect balance of interior comfort and sporty exterior tone
- Complete cat-back exhaust system
- 304 stainless steel construction for durability and corrosion resistance
- Polished stainless steel mufflers, end pipes, and tips
- Aggressive appearance that complements factory cutouts
- Limited lifetime warranty
Construction & Design
Cat-Back Configuration
Replaces the restrictive OEM exhaust from the catalytic converters back, improving flow, sound, and overall performance.
Material Quality
304 stainless steel construction ensures longevity, corrosion resistance, and premium appearance.
Sound Engineering
Engineered for mild daily driving with a punchy, aggressive tone under acceleration.
Finish & Appearance
Polished stainless steel mufflers and tips provide a sleek, aggressive look that integrates seamlessly with the Altima’s rear cutouts.
Why STILLEN
With decades of Nissan-specific engineering experience, STILLEN exhaust systems are dyno-tested, vehicle validated, and designed to deliver measurable performance gains while maintaining OEM-level fitment and finish.
