Description
The STILLEN Axle-Back Exhaust System for the 2008–2013 Nissan Altima Coupe [L33] is engineered to improve performance, enhance exhaust tone, and deliver a refined yet aggressive appearance—all while maintaining excellent daily drivability.
From the factory, the Altima Coupe exhaust system is restrictive and undersized. STILLEN addresses this by increasing exhaust diameter to 2.5-inch mandrel-bent stainless steel piping, allowing the engine to breathe more efficiently across the entire powerband. The result is a noticeable increase in horsepower and torque, particularly toward the upper RPM range, along with improved throttle response.
Sound tuning is a key focus of this axle-back system. It delivers a mild, refined note at idle and during cruising, while producing a more aggressive exhaust tone under throttle—without excessive cabin noise or drone. This makes it an ideal upgrade for drivers who want enhanced sound and performance without sacrificing comfort.
Constructed entirely from high-quality stainless steel, including the mufflers, end pipes, and tips, this system is built for long-term durability and corrosion resistance. The exhaust exits through dual polished stainless steel tips engraved with the STILLEN logo, filling the factory rear valance cutouts perfectly for a clean, OEM-plus appearance.
Designed as a direct bolt-on axle-back system, installation is straightforward and requires no cutting or welding. Backed by a limited lifetime warranty, this exhaust delivers lasting performance, sound, and style.
Vehicle Fitment
Nissan
-
2008–2013 Nissan Altima Coupe [L33]
Fitment Notes
- Coupe models only
- Axle-back exhaust system
- Direct bolt-on replacement using factory mounting points
- Designed to fit factory rear valance cutouts
Features & Benefits
- Increase in horsepower and torque
- Improved exhaust flow with 2.5-inch mandrel-bent piping
- Mild note at idle and cruising
- Aggressive exhaust tone under throttle
- Reduced restriction compared to factory exhaust
- Ideal balance of performance and cabin comfort
- High-quality stainless steel construction
- Polished stainless mufflers, end pipes, and tips
- STILLEN logo engraved exhaust tips
- Bolt-on installation
- Limited lifetime warranty
Construction & Design
Axle-Back Configuration
Replaces the factory rear exhaust section to improve sound, flow, and appearance without modifying the entire exhaust system.
Material Quality
Manufactured from stainless steel throughout, ensuring corrosion resistance, longevity, and consistent performance.
Sound Engineering
Performance mufflers are tuned to deliver a sporty, aggressive tone under acceleration while remaining comfortable for daily driving.
Finish & Appearance
Dual polished stainless steel tips are precision-finished and engraved with the STILLEN logo, filling the factory cutouts cleanly and evenly.
Why STILLEN
With decades of experience engineering Nissan-specific performance products, STILLEN exhaust systems are dyno-tested, precision-built, and designed to deliver real-world gains with OEM-level fitment and durability.
