XForce Cat Back Exhaust Oval Single Outlet 2002-2007 WRX / STI | 3" Mandrel-Bent Piping | Performance Exhaust System
Overview
The XForce Cat Back Exhaust Oval Single Outlet system is a precision-engineered upgrade designed specifically for the 2002-2007 Subaru WRX and WRX STI manual transmission models. This cat-back exhaust replaces the factory system from the catalytic converter back, improving exhaust flow and delivering a deeper, more aggressive exhaust note that enhances the iconic Subaru boxer engine sound. It's ideal for enthusiasts looking to increase horsepower and add a distinctive auditory presence without sacrificing daily drivability.
Crafted from raw 409 stainless steel with mandrel-bent piping, the XForce system emphasizes durability and unrestricted exhaust flow. The design features a center hotdog resonator paired with an oval rear muffler and a single 4-inch outlet tip, balancing performance gains with a refined yet aggressive tone. XForce’s engineering approach focuses on maximizing power potential while maintaining a straightforward bolt-on installation, making it a practical upgrade for Subaru owners who demand quality and performance.
For Subaru WRX and STI owners, this exhaust system offers tangible benefits including improved throttle response, a noticeable horsepower increase, and the signature deep rumble that turns heads. The 3-inch piping diameter optimizes flow for the turbocharged boxer engine, supporting higher boost levels and tuning potential. Some vehicle setups may require an additional connecting pipe (E4-SW05-C1) for a perfect fit, especially when paired with standalone catalytic converters, ensuring compatibility across various configurations.
Features & Specifications
This XForce Cat Back Exhaust is engineered for 2002-2007 Subaru WRX and WRX STI manual models and features 3-inch mandrel-bent piping. Constructed from raw 409 stainless steel, it delivers enhanced exhaust flow and a deep, aggressive tone for Subaru enthusiasts seeking performance gains and authentic sound.
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Brand: XForce
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Product: Cat Back Exhaust Oval Single Outlet 2002-2007 WRX / STI
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Part Number: E4-SW05-MP02-CBS
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Fitment: 2002-2007 Subaru WRX / WRX STI (Manual Transmission Only)
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Material: Raw 409 Stainless Steel
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Finish: Raw Stainless Steel
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Construction: Mandrel-Bent Piping with Center Hotdog Resonator and Oval Rear Muffler
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Origin: Not Specified
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Exhaust Diameter: 3 inches
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Outlet Tip: Single 4-inch Oval
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Compatibility Note: Some models require E4-SW05-C1 connecting pipe for bolt-on fitment with standalone catalytic converters
Key Benefits
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Performance: Mandrel-bent 3" piping improves exhaust flow, supporting horsepower gains and better throttle response.
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Sound: Delivers the classic WRX aggressive and deep exhaust rumble that enhances the Subaru driving experience.
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Fitment: Designed specifically for 2002-2007 WRX and WRX STI manual models, ensuring a precise bolt-on installation.
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Durability: Constructed from raw 409 stainless steel for corrosion resistance and long-lasting performance.
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Installation: Easy bolt-on design reduces installation time and complexity for enthusiasts upgrading their exhaust system.
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Compatibility: Supports vehicles with standalone catalytic converters when paired with the optional connecting pipe, maintaining versatility.
What's Included
- 1× XForce Cat Back Exhaust Oval Single Outlet System
- Center hotdog resonator and oval rear muffler assembly
- Single 4" oval exhaust tip
- Installation instructions
- Note: Connecting pipe (E4-SW05-C1) sold separately if required for your vehicle setup
Installation & Compatibility
The XForce Cat Back Exhaust system is designed for a straightforward bolt-on installation on 2002-2007 Subaru WRX and WRX STI manual transmission models. Basic hand tools are sufficient for installation, making it accessible for experienced DIY enthusiasts. However, professional installation is recommended if you are unfamiliar with exhaust work or to ensure optimal fitment and sealing. No major modifications are required, but some models with standalone catalytic converters will need the separately sold connecting pipe (E4-SW05-C1) to complete the installation.
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Professional Installation: Recommended for best results
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Modifications Required: None for standard setups; connecting pipe required for some standalone cat converter applications
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Verify Compatibility: Confirm fitment for your specific year, trim, and transmission type before purchase
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