APR Catback Exhaust System for Porsche 911 (992) 3.7T | CBK0058

The APR Catback Exhaust System (CBK0058) is the ultimate lightweight performance exhaust designed specifically for the Porsche 911 Turbo and Turbo S (992) 3.7T. By replacing the heavy factory components with a precision-engineered T304 stainless steel system, APR has managed to shed 10 lbs (37%) off the rear of the vehicle. This system utilizes a dual-path design with 3" valved and 2" non-valved paths, providing a massive increase in cross-sectional area—up to 66%—to allow the 3.7L twin-turbocharged flat-six to breathe with minimal backpressure.

Acoustically, the CBK0058 offers a dual personality. When the valves are open, the "short path" design maximizes exhaust velocity for an aggressive, motorsport-inspired scream at wide-open throttle. When cruising, the high-quality cast valves close, directing exhaust through a drone-eliminating muffler for a civilized yet sporty growl. This system is a direct plug-and-play upgrade, compatible with both standard and Porsche Sport Exhaust (PSE) equipped vehicles.

Features:

• Significant Weight Savings: Weighs only 17 lbs—shedding 10 lbs (37%) compared to the factory Porsche Sport Exhaust.
• Increased Flow Capacity: Valved paths are 19% larger and non-valved paths are 66% larger in cross-sectional area than stock.
• High-Velocity Design: Short-path valved routing minimizes backpressure to optimize turbocharger response and power.
• Factory Valve Integration: Includes cast T304 stainless steel valve housings that utilize the OEM ECU actuators for seamless operation.
• Premium Construction: CNC-mandrel bent T304 stainless steel tubing with expert TIG welding throughout.
• Precision Fitment: CNC-bent and laser-cut brackets ensure a perfect bolt-on installation with only two clamps.
• Drone-Free Comfort: Integrated sound-absorption muffler eliminates cabin drone during highway cruising.

Technical Specifications:

Installation Instructions