{"product_id":"austenite™-subaru-wrx-dual-muffler-axle-back-exhaust-15-21","title":"cp-e Austenite Dual Muffler Axle Back Exhaust 2015-2021 WRX \/ 2015-2018 STI","description":"\u003ch3\u003ecp-e Austenite Dual Muffler Axle Back Exhaust 2015-2021 WRX \/ 2015-2018 STI | Aggressive Tone | Performance Axle Back Exhaust\u003c\/h3\u003e\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eDeveloped 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.\u003c\/p\u003e\n\u003cp\u003eFor 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.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis 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.\u003c\/p\u003e\n\u003cul style=\"list-style: none; padding: 0; margin: 0;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e cp-e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Austenite Dual Muffler Axle Back Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SBAE00002T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2015-2021 WRX \/ 2015-2018 STI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 Surgical Grade Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e CNC Laser Cut Flanges, TIG Welded, CNC Machined Y Merge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Not Specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Diameter:\u003c\/strong\u003e 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Size:\u003c\/strong\u003e 4\" Quad Dual Wall\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Hangers:\u003c\/strong\u003e 1\/2\" Thick Diameter with Locking Mechanism\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign Technology:\u003c\/strong\u003e 3D CAD \u0026amp; CAM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Characteristics:\u003c\/strong\u003e Aggressive tone with drone-free cruising\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Frees up exhaust flow to improve turbo spool and engine breathing when paired with supporting mods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Quality:\u003c\/strong\u003e Delivers an aggressive, exotic exhaust note without drone during highway cruising.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Constructed from 304 surgical grade stainless steel with TIG welds for long-lasting corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Precision CAD-designed for a direct bolt-on fit with factory-like installation experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e Features CNC machined components and reinforced hangers to resist cracking and maintain alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAesthetics:\u003c\/strong\u003e 4\" dual wall tips provide a clean, aggressive rear appearance that complements Subaru styling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1× cp-e Austenite Dual Muffler Axle Back Exhaust\u003c\/li\u003e\n\u003cli\u003eMounting hardware for complete installation\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific year and trim level\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"cp-e","offers":[{"title":"Black","offer_id":47179549966511,"sku":"SBAE00002B","price":848.95,"currency_code":"USD","in_stock":false},{"title":"Polished","offer_id":47179549999279,"sku":"SBAE00002P","price":798.95,"currency_code":"USD","in_stock":false},{"title":"Titan","offer_id":47179550032047,"sku":"SBAE00002T","price":798.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/hf_20260716_211740_3bc863de-57dc-4e07-921c-09175bacf109.png?v=1784236766","url":"https:\/\/subimods.com\/products\/austenite%e2%84%a2-subaru-wrx-dual-muffler-axle-back-exhaust-15-21","provider":"Subimods.com","version":"1.0","type":"link"}