XForce Varex Valved Cat Back Exhaust Polished Tips 2011-2021 WRX Sedan / STI Sedan | 3" Mandrel-Bent | Valved Cat-Back Exhaust
Overview
The XForce Varex Valved Cat Back Exhaust is a high-performance exhaust system designed specifically for the 2011-2021 Subaru WRX and WRX STI Sedans. This 3-inch mandrel-bent cat-back system offers Subaru enthusiasts enhanced sound control, aggressive styling, and improved exhaust flow. Featuring an innovative valved muffler design, it allows drivers to switch between a refined street tone and a louder, more aggressive exhaust note with the included remote key fob, making it ideal for both daily driving and spirited performance sessions.
Engineered with durability and performance in mind, the system incorporates flex bellows to absorb engine movement and reduce stress, ensuring long-term reliability. The center section includes a hot dog resonator to optimize flow and sound quality, while a cast stainless steel Y-piece with the XForce logo transitions smoothly from a single 3-inch pipe to twin 2.5-inch outlets. The quad 4-inch polished tips provide a commanding rear-end presence that complements the Subaru WRX and STI’s sporty character.
Tested extensively on Subaru VA STI and WRX G3 S2 models, this exhaust system delivers a perfect balance of power potential and sound versatility. The valved muffler offers 10% greater volume variation compared to previous designs, amplifying the signature boxer engine rumble when open, yet maintaining a street-friendly tone when closed. This makes it a versatile upgrade that enhances the driving experience without compromising daily usability.
Features & Specifications
This XForce Varex Valved Cat Back Exhaust is engineered for 2011-2021 Subaru WRX and STI Sedans and features a 3-inch mandrel-bent stainless steel construction with valved mufflers for adjustable sound levels. Constructed from brushed 304 stainless steel, it delivers durability and optimal exhaust flow for Subaru enthusiasts seeking enhanced performance and sound control.
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Brand: XForce
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Product: Varex Valved Cat Back Exhaust Polished Tips
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Part Number: ESSWRX14VKCS
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Fitment: 2011-2021 WRX / STI Sedan
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Material: Brushed 304 Stainless Steel
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Finish: Polished Quad 4" Tips
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Construction: Mandrel-Bent with Cast Stainless Steel Y-Piece
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Origin: Not Specified
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Pipe Diameter: 3" Main, 2.5" Dual Outlets
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Valved Muffler: VAREX Remote-Controlled Adjustable Muffler
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Resonator: Center Hot Dog Resonator
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Sound Control: 10% Greater Volume Variation Than Previous Models
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Included Accessories: Remote Key Fob and Receiver Unit
Key Benefits
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Performance: Optimized 3" mandrel-bent piping and high-flow resonator improve exhaust flow and throttle response.
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Sound Control: VAREX valved muffler allows on-the-fly adjustment between aggressive and street-friendly exhaust tones.
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Durability: Brushed 304 stainless steel construction with flex bellows reduces stress and resists corrosion for long-lasting reliability.
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Fitment: Designed specifically for 2011-2021 WRX and STI Sedans ensuring precise fit and easy installation.
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Aesthetics: Polished quad 4" tips provide a bold, aggressive rear-end look that complements Subaru’s sporty styling.
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Versatility: Remote key fob control offers convenient sound adjustment for different driving environments.
What's Included
- 1× Center Section with Hot Dog Resonator
- 1× Cast Stainless Steel Y-Piece Rear Section with XForce Logo
- 2× VAREX Valved Mufflers
- 1× VAREX Remote Key Fob
- 1× Key Fob Receiver Unit
- 1× 3" Slip Joint Clamp
- 2× 2.5" Slip Joint Clamps
- 4× Nuts & Bolts
- 1× 3" 2-Bolt Gasket
- 2× 2.5" Gaskets
Installation & Compatibility
Installation of the XForce Varex Valved Cat Back Exhaust is moderately complex due to the valved muffler system and included electronic components. While the system features slip joint clamps for easier assembly, professional installation is recommended to ensure proper fitment, wiring of the remote control system, and optimal exhaust alignment. No major modifications are required, but verify compatibility with your specific model year and trim. Tuning is not required for this exhaust, but it is advisable to check for any ECU adjustments if combined with other performance modifications.
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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 STI Sedan model
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