aFe Takeda 3 IN to 2-1/2 IN 304 Stainless Steel Cat-Back Exhaust System for Honda Civic Si 17-20 L4-1.5L afe49-36618-B

Unleash the full performance potential of your 2017–2020 Honda Civic Si Coupe with the aFe Takeda 3"–2.5" 304 Stainless Steel Cat-Back Exhaust System. Engineered to increase horsepower, torque, and overall exhaust efficiency, this system delivers an aggressive, refined tone along with premium construction built to last.

Performance Gains

Experience dyno-proven increases of up to +10 horsepower and +11 lb-ft of torque. The mandrel-bent 3" to 2.5" stainless steel tubing maximizes exhaust flow, enhancing power throughout the RPM range.

Deep, Aggressive Exhaust Note

Dual free-flowing mufflers crafted from 304 stainless steel reduce high-frequency tones and create a powerful, aggressive sound that complements the Civic Si’s sporty character—without overwhelming cabin comfort.

Premium Black Stainless Steel Tips

This system is finished with dual 4-3/4" x 4-1/4" oval, double-wall, angle-cut black stainless steel tips, each laser-etched with the Takeda logo for a bold, custom appearance.

Precision TIG-Welded Construction

• 100% hand TIG-welded by certified craftsmen

• Ensures maximum durability, strength, and long-term reliability

• Corrosion-resistant brushed 304 stainless steel for long-lasting good looks

Direct-Fit Installation

Installation is simple and hassle-free:

• Utilizes all factory mounting points

• OE-style bayonet hangers ensure stable positioning under all driving conditions

• High-quality band clamps provide a 360-degree leak-free seal

Emissions Compliance

• This product does not require a CARB EO#

• Designed and manufactured in aFe’s Corona, California facility

Vehicle Fitment