{"product_id":"grimmspeed-gentleman-s-exhaust-v2-catback-system-resonated","title":"Grimmspeed Gentleman’s Resonated Catback V2 2015-2021 WRX \/ 2015-2021 STI","description":"\u003ch3\u003eGrimmspeed Gentleman’s Resonated Catback V2 2015-2021 WRX \/ 2015-2021 STI | Refined Tone | Performance Exhaust System\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Grimmspeed Gentleman’s Resonated Catback V2 is a meticulously engineered exhaust system designed specifically for the 2015-2021 Subaru WRX and STI models. This version builds on the original gentleman’s exhaust concept, delivering a balanced and refined exhaust note that avoids drone while maintaining a strong, confident presence. It is ideal for enthusiasts who want a sophisticated sound profile without sacrificing performance or daily drivability.\u003c\/p\u003e\n\u003cp\u003eGrimmspeed’s approach to this catback focuses on precision fitment, durability, and acoustic refinement. Key design updates include dual-overlapping slip fit connections and a dual-hanger mid-pipe that allow for greater adjustability and chassis-specific alignment. The upgraded muffler design features larger perforated cores and an improved Y-splitter to enhance flow, paired with long-lasting packing material that resists degradation over time. These engineering choices reflect Grimmspeed’s commitment to quality and performance for Subaru owners.\u003c\/p\u003e\n\u003cp\u003eFor Subaru enthusiasts planning additional exhaust modifications, the resonated mid-pipe version offers a smoother, more controlled sound as airflow increases throughout the system. This makes it a practical choice for those running supporting mods who want to maintain a clean exhaust tone without harshness or excessive drone. The use of premium 304 stainless steel and TIG welding ensures longevity and corrosion resistance, making this catback a reliable upgrade for both street and spirited driving.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Grimmspeed Gentleman’s Resonated Catback V2 is engineered for the 2015-2021 Subaru WRX and STI (VA Chassis) and features 304 stainless steel construction with dual-overlapping slip fit connections. Constructed from high-grade stainless steel, it delivers improved flow and a refined exhaust tone for Subaru enthusiasts seeking a durable and well-tuned performance exhaust.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Grimmspeed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Gentleman’s Resonated Catback V2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e GRM.1025.2.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2015-2021 Subaru WRX, 2015-2021 Subaru STI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 Stainless Steel (exhaust components), 409 Stainless Steel (clamps)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Brushed stainless steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e TIG welded with dual-overlapping slip fit connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Not specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Gains:\u003c\/strong\u003e Supports increased flow for modified setups (no direct WHP claim)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTuning Required:\u003c\/strong\u003e Recommended for supporting mods\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExhaust Tips:\u003c\/strong\u003e Quad 3.5-inch stainless steel tips\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMid-Pipe:\u003c\/strong\u003e Resonated with dual-hanger design and stainless steel braided flex section\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Enhanced exhaust flow with upgraded muffler cores and Y-splitter improves power potential on modified WRX\/STI setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSound Quality:\u003c\/strong\u003e Balanced, refined tone with resonated mid-pipe reduces drone while maintaining a confident exhaust note.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Dual-overlapping slip fit connections and dual-hanger mid-pipe allow precise chassis-specific alignment for a perfect fit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Premium 304 stainless steel construction and TIG welding ensure long-lasting corrosion resistance and structural integrity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustability:\u003c\/strong\u003e Slip fit clamps and flex section accommodate various exhaust configurations and reduce stress on components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e Includes polyurethane exhaust hangers and a 2-bolt MLS gasket for secure installation and reduced movement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2× Grimmspeed Mufflers\u003c\/li\u003e\n  \u003cli\u003e1× Grimmspeed Y-Pipe\u003c\/li\u003e\n  \u003cli\u003e1× Grimmspeed Resonated Mid-Pipe\u003c\/li\u003e\n  \u003cli\u003e2× 2.5” Stainless Steel Double Overlap Slip Fit Clamps with Hardware\u003c\/li\u003e\n  \u003cli\u003e1× 3” Stainless Steel Double Overlap Slip Fit Clamp with Hardware\u003c\/li\u003e\n  \u003cli\u003e1× Grimmspeed 2-Bolt MLS Gasket\u003c\/li\u003e\n  \u003cli\u003e2× M10 Bolts\u003c\/li\u003e\n  \u003cli\u003e2× M10 Nuts\u003c\/li\u003e\n  \u003cli\u003e2× Grimmspeed License Plate Frames\u003c\/li\u003e\n  \u003cli\u003e1× Grimmspeed Decal\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eInstallation of the Grimmspeed Gentleman’s Resonated Catback V2 is moderately complex due to the need for precise alignment and proper sealing of slip fit connections. While a knowledgeable enthusiast with basic hand tools can perform the install, professional installation is recommended to ensure optimal fitment and exhaust sealing. The included dual-overlapping slip fit clamps and dual-hanger mid-pipe design facilitate chassis-specific adjustments, but care should be taken to avoid exhaust leaks or misalignment.\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; designed for direct bolt-on fitment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific 2015-2021 WRX or STI model and chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTuning is recommended if combined with additional exhaust or intake modifications to optimize power delivery and maintain safe air\/fuel ratios.\u003c\/p\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"Grimmspeed","offers":[{"title":"Default Title","offer_id":46738004934831,"sku":"GRM.1025.2.0","price":1399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/grimmspeed-gentlemans-resonated-catback-v2-2015-2021-wrx-2015-2021-sti-grm102520-5978534.jpg?v=1775231773","url":"https:\/\/subimods.com\/products\/grimmspeed-gentleman-s-exhaust-v2-catback-system-resonated","provider":"Subimods.com","version":"1.0","type":"link"}