{"product_id":"austenite™-subaru-wrx-off-road-axle-back-exhaust-15-21","title":"cp-e Austenite Off Road Axle Back Exhaust 2015-2021 WRX \/ 2015-2018 STI","description":"\u003ch3\u003ecp-e Austenite Off Road 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 Off Road Axle Back Exhaust is a high-performance 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 upgrading to the cp-e Austenite, Subaru enthusiasts gain a more aggressive exhaust note that enhances the driving experience without the unwanted drone common in many aftermarket systems.\u003c\/p\u003e\n\u003cp\u003eEngineered using advanced 3D CAD and CAM technology, the Austenite exhaust features precision CNC laser-cut flanges, mandrel-bent 304 surgical grade stainless steel tubing, and a modular design with Titan™ finish for durability and corrosion resistance. Every component is TIG welded by hand to ensure strength and a refined appearance. This attention to detail results in a system that balances raw performance with refined sound quality, making it a standout choice for Subaru owners seeking both form and function.\u003c\/p\u003e\n\u003cp\u003eBeyond its aggressive tone, the cp-e Austenite axle back exhaust improves exhaust flow, reducing backpressure and smoothing turbo spool response on the FA and EJ engine platform. This upgrade is especially beneficial for those who have already upgraded their downpipe, as it removes the final bottleneck in the exhaust stream. The result is a more responsive throttle feel and a unique exhaust note that is both exotic and controlled—perfect for Subaru enthusiasts who want to enhance their car’s character without sacrificing daily drivability.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis cp-e Austenite Off Road Axle Back Exhaust is engineered for the 2015-2021 WRX and 2015-2018 STI, featuring 2.5\" diameter 304 surgical grade stainless steel tubing and polished 4\" dual wall tips. Constructed with precision CNC machining and TIG welding, it delivers improved exhaust flow and an aggressive, drone-free sound for Subaru enthusiasts seeking enhanced performance and tone.\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 Off Road Axle Back Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SBAE00001T\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, Mandrel Bent Tubing, TIG Welded\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\" from flange to tip\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\u003eFlange Thickness:\u003c\/strong\u003e 3\/8\" CNC Laser Cut\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:\u003c\/strong\u003e Modular with CNC Machined Y Merge and Shallow Bends\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 reduce backpressure and improve turbo spool response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Quality:\u003c\/strong\u003e Aggressive yet refined exhaust tone with no drone during cruising speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Made from 304 surgical grade stainless steel for corrosion resistance and long life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Precision CAD-designed for a factory-like fit on 2015-2021 WRX and 2015-2018 STI models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Construction:\u003c\/strong\u003e CNC laser-cut flanges, mandrel bends, and hand TIG welding ensure strength and aesthetic appeal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Includes all necessary hardware for a professional and secure installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1× cp-e Austenite Off Road 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 Off Road Axle Back Exhaust is a direct bolt-on upgrade designed for straightforward installation on the specified WRX and STI models. While the installation is generally DIY-friendly for those with basic mechanical skills and tools, professional installation is recommended to ensure proper fitment and to avoid exhaust leaks. No major modifications are required, but verifying fitment for your specific year and trim is essential. For optimal performance gains and to fully realize the benefits of this axle back, tuning is recommended especially if combined with other exhaust or intake modifications.\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":47179549868207,"sku":"SBAE00001B","price":548.95,"currency_code":"USD","in_stock":false},{"title":"Polished","offer_id":47179549900975,"sku":"SBAE00001P","price":498.95,"currency_code":"USD","in_stock":true},{"title":"Titan","offer_id":47179549933743,"sku":"SBAE00001T","price":498.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/hf_20260716_212704_6b46c4be-223e-4065-9f9e-ff156d286c20.png?v=1784237270","url":"https:\/\/subimods.com\/products\/austenite%e2%84%a2-subaru-wrx-off-road-axle-back-exhaust-15-21","provider":"Subimods.com","version":"1.0","type":"link"}