cp-e Austenite Dual Muffler Axle Back Exhaust 2015-2021 WRX / 2015-2018 STI | Aggressive Tone | Performance Axle Back Exhaust
Overview
The cp-e Austenite Dual Muffler Axle Back Exhaust is a precision-engineered upgrade designed specifically for the 2015-2021 Subaru WRX and 2015-2018 STI. This axle back exhaust replaces the restrictive factory unit, which often prioritizes manufacturing efficiency and driver comfort over performance and sound. By uncorking the boxer exhaust, cp-e delivers a system that enhances exhaust flow while producing an aggressive yet refined exhaust note that Subaru enthusiasts crave.
Developed using advanced 3D CAD and CAM technology, the Austenite axle back exhaust features premium 304 surgical grade stainless steel construction with 18 gauge tubing and CNC laser-cut flanges. The design incorporates a CNC machined Y-merge with shallow bends to promote exhaust velocity and reduce back pressure. This meticulous engineering ensures a perfect factory-like fit and long-term durability, setting cp-e apart as a leader in Subaru performance exhausts.
For Subaru WRX and STI owners, this axle back exhaust offers a balanced sound profile that eliminates drone during cruising while delivering a pronounced and exotic tone at wide-open throttle. When paired with an upgraded downpipe, it removes the final bottleneck in the exhaust stream, improving turbo spool response and overall engine breathing. The cp-e Austenite exhaust is the ideal combination of performance gains and driver engagement without sacrificing daily drivability.
Features & Specifications
This cp-e Austenite Dual Muffler Axle Back Exhaust is engineered for the 2015-2021 WRX and 2015-2018 STI, featuring 2.5" diameter tubing and polished 4" dual wall stainless steel tips. Constructed from 304 surgical grade stainless steel, it delivers improved exhaust flow and an aggressive yet drone-free tone for Subaru enthusiasts seeking enhanced performance and sound quality.
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Brand: cp-e
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Product: Austenite Dual Muffler Axle Back Exhaust
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Part Number: SBAE00002T
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Fitment: 2015-2021 WRX / 2015-2018 STI
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Material: 304 Surgical Grade Stainless Steel
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Construction: CNC Laser Cut Flanges, TIG Welded, CNC Machined Y Merge
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Origin: Not Specified
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Tube Diameter: 2.5 inches
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Tip Size: 4" Quad Dual Wall
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Exhaust Hangers: 1/2" Thick Diameter with Locking Mechanism
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Design Technology: 3D CAD & CAM
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Sound Characteristics: Aggressive tone with drone-free cruising
Key Benefits
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Performance: Frees up exhaust flow to improve turbo spool and engine breathing when paired with supporting mods.
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Sound Quality: Delivers an aggressive, exotic exhaust note without drone during highway cruising.
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Durability: Constructed from 304 surgical grade stainless steel with TIG welds for long-lasting corrosion resistance.
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Fitment: Precision CAD-designed for a direct bolt-on fit with factory-like installation experience.
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Quality: Features CNC machined components and reinforced hangers to resist cracking and maintain alignment.
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Aesthetics: 4" dual wall tips provide a clean, aggressive rear appearance that complements Subaru styling.
What's Included
- 1× cp-e Austenite Dual Muffler Axle Back Exhaust
- Mounting hardware for complete installation
Installation & Compatibility
The cp-e Austenite Dual Muffler Axle Back Exhaust is designed for a straightforward bolt-on installation using factory mounting points and included hardware. While the installation is generally DIY-friendly for enthusiasts with basic mechanical skills, professional installation is recommended to ensure proper fitment and alignment. No special tools beyond standard hand tools are typically required. This axle back exhaust is compatible with 2015-2021 Subaru WRX and 2015-2018 STI models. For optimal performance gains and sound, pairing with an upgraded downpipe and appropriate tuning is recommended.
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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 year and trim level
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