XForce 3" Cat Back Exhaust Quad Tip 2011-2021 WRX Sedan / STI Sedan | 3" Mandrel-Bent Stainless Steel | Performance Exhaust System
Overview
The XForce 3" Cat-Back Exhaust System is a high-performance upgrade designed specifically for the 2011-2021 Subaru WRX Sedan and WRX STI Sedan. This exhaust system replaces the factory setup with a mandrel-bent 3" stainless steel piping that optimizes exhaust flow, delivering improved throttle response, increased horsepower, and enhanced torque across the RPM range. Featuring dual side outlets with quad 3.5" double-walled tips, it not only boosts performance but also adds an aggressive, refined aesthetic to your Subaru’s rear end.
Crafted from durable 304 stainless steel, the XForce exhaust system emphasizes quality and longevity. The design incorporates a hot dog style resonator centrally located to reduce rasp and drone, while the straight-through oval rear mufflers allow for unrestricted exhaust flow. This balance of sound control and performance tuning reflects XForce’s engineering philosophy—delivering a deep, powerful exhaust note without sacrificing daily drivability or reliability.
For Subaru enthusiasts, this cat-back system offers a meaningful upgrade that complements the WRX and STI’s turbocharged powertrain. The increased pipe diameter and efficient muffler design help reduce backpressure, unlocking the engine’s potential while maintaining a strong, sporty exhaust tone. Installation is straightforward with direct bolt-on fitment, making it an accessible performance enhancement for owners looking to elevate their driving experience.
Features & Specifications
This XForce 3" Cat Back Exhaust System is engineered for 2011-2021 Subaru WRX and WRX STI Sedans and features mandrel-bent 304 stainless steel construction with a 3" main pipe diameter. Designed for maximum airflow and durability, it delivers improved power and throttle response for Subaru enthusiasts seeking a balanced performance exhaust upgrade.
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Brand: XForce
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Product: 3" Cat Back Exhaust Quad Tip 2011-2021 WRX Sedan / STI Sedan
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Part Number: ES-SW26-CBS
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Fitment: 2011-2021 Subaru WRX Sedan / WRX STI Sedan
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Material: 304 Stainless Steel
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Finish: Polished Quad 3.5" Double-Walled Tips
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Construction: Mandrel-Bent Pipework, Welded Assembly
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Origin: Not Specified
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Pipe Diameter: 3" main pipe, splitting to twin 2.5" piping
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Resonator Type: Center Hot-Dog Style Resonator
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Muffler Type: Oval Straight-Through Rear Mufflers
Key Benefits
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Performance: Increased horsepower and torque gains through optimized exhaust flow and reduced backpressure.
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Sound Quality: Deep, aggressive exhaust note with reduced rasp thanks to the center hot dog resonator and straight-through mufflers.
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Durability: High-grade 304 stainless steel construction resists corrosion and withstands heat for long-lasting reliability.
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Fitment: Direct bolt-on design ensures a precise fit for 2011-2021 WRX and STI Sedans with no modifications required.
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Aesthetics: Quad 3.5" double-walled polished tips provide a bold, OEM+ appearance that enhances the rear profile.
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Throttle Response: Larger diameter piping improves exhaust scavenging, resulting in quicker turbo spool and throttle response.
What's Included
- 1× XForce 3" Cat Back Exhaust System for 2011-2021 WRX / STI Sedan
- Quad 3.5" Double-Walled Exhaust Tips
- Mounting hardware for direct bolt-on installation
- Installation instructions
Installation & Compatibility
Installation of the XForce 3" Cat-Back Exhaust is straightforward with its direct bolt-on design, making it accessible for enthusiasts with basic mechanical skills and common hand tools. No cutting or welding is required, and the system integrates seamlessly with the factory exhaust components. While professional installation is recommended for optimal fitment and to ensure proper torque on fasteners, experienced DIYers can complete the swap in a reasonable timeframe. No tuning is required to enjoy the performance and sound benefits, but owners seeking maximum gains may consider ECU tuning to complement the improved exhaust flow.
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Professional Installation: Recommended
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific 2011-2021 WRX or WRX STI Sedan model
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