STILLEN 2013-2018 Nissan Altima 2.5 Sedan Cat-Back Exhaust System - 508305

The STILLEN Stainless Steel Cat-Back Exhaust System for the 2013–2018 Nissan Altima Sedan 2.5L is engineered to enhance performance, increase horsepower and torque, and provide a refined yet aggressive exhaust note.

This complete cat-back system replaces the factory exhaust from the catalytic converters back, improving exhaust flow and delivering a noticeable performance increase across the RPM range. Drivers will experience mild sound at idle and cruising, with a more aggressive tone under throttle, providing a perfect balance of daily drivability and sporty character.

Constructed from high-quality stainless steel, the system is designed for durability and corrosion resistance. It features polished stainless steel mufflers, end pipes, and tips, filling the factory exhaust cutouts with an aggressive, factory-integrated appearance.

Installation is straightforward with direct bolt-on fitment, utilizing factory mounting locations—no cutting or welding required. This exhaust system is backed by a limited lifetime warranty, ensuring peace of mind and long-term reliability.

Vehicle Fitment

Nissan

• 2013-2018 Nissan Altima Sedan 2.5L

Fitment Notes

• Fits 2.5L 4-cylinder Sedan models ONLY
• Does NOT fit Coupe models
• Does NOT fit 3.5L V6 models
• Complete cat-back exhaust system
• Direct bolt-on installation using factory mounting points

Features & Benefits

• Increase in horsepower and torque
• Improved exhaust flow over factory system
• Mild exhaust note at idle and cruising
• Aggressive sound under throttle
• Perfect balance between interior comfort and sporty exterior tone
• Complete cat-back exhaust system
• Stainless steel construction throughout
• Polished stainless steel tips, end pipes, and mufflers
• Aggressive appearance that matches factory exhaust cutouts
• Limited lifetime warranty

Construction & Design

Cat-Back Configuration
Replaces the restrictive factory exhaust system from the catalytic converters back, improving flow, sound, and performance.

Material Quality
Manufactured from stainless steel for long-lasting durability and corrosion resistance.

Sound Engineering
Balanced exhaust tuning delivers daily-driving comfort with a strong, sporty tone under acceleration.

Finish & Appearance
Polished stainless steel components provide a premium, aggressive look that enhances the rear of the Altima Sedan.

Why STILLEN

With decades of Nissan-specific engineering experience, STILLEN exhaust systems are dyno tested, vehicle validated, and designed to deliver real performance gains with factory-quality fitment and sound refinement.