{"product_id":"mishimoto-mmexh-wrx-15-cat-back-exhaust-fits-subaru-wrx-sti-2015-2021","title":"Mishimoto MMEXH-WRX-15 Cat-Back Exhaust  Fits Subaru WRX\/STI 2015-2021","description":"Mishimoto is proud to release the Performance Cat-back for the 2015+ Subaru WRX\/STI. The biggest complaint is the stock cat-back exhaust systems lack of aggressiveness. By installing the Mishimoto Performance Stainless Steel Cat-back, the exhaust system is able to breathe easier, providing horsepower, torque, and a rich exhaust tone. After comparing many different muffler sizes and designs, the Engineers at Mishimoto chose oval mufflers which prevent highway drone, but still provide an aggressive exhaust tone. During dyno pulls with the 2015+ Subaru WRX\/STI w\/ CVT, Mishimoto saw gains of up to 9 whp and 8 wtq using 93 octane fuel while maintaining safe AFRs on a stock tune (see additional images for dyno chart). This exhaust installs in under one hour and features quad 3.5in staggered double wall polished tips. The Mishimoto Performance Cat-back Exhaust provides an extremely aggressive turbo and exhaust tone under acceleration and boost, giving you that aggressive tone you have been looking for! The engineers at Mishimoto designed this cat-back as a four-piece design with precision TIG welded 304 Stainless Steel. This allows a smooth exhaust flow from the 3.0in 2-bolt exhaust flange all the way through the 2.25in y-section. To top it off, this cat-back includes two 2.25in V-Band clamps, a 3in exhaust band clamp, a new 3in 2-bolt flange gasket, and all stainless steel hardware, so you don't have to worry about your hardware rusting ever again! It also comes with the Mishimoto Lifetime Warranty you know and trust.\r\n\u003cul\u003e\t\u003cli\u003eDyno-proven maximum gains of up to 9 whp and 8 wtq and peak gains of up to 4 whp and 3 wtq using 93 octane fuel while maintaining safe AFRs on the stock tune (2015 WRX w\/ CVT)\u003c\/li\u003e\r\n\t\u003cli\u003eExtremely aggressive turbo and exhaust tone under acceleration and boost\u003c\/li\u003e\r\n\t\u003cli\u003eMates with most aftermarket downpipes\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eAttributes:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eMishimoto\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00748354019100\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCatalytic Converter Quantity: \u003c\/b\u003e0\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eClamping Type: \u003c\/b\u003eFlat Band\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eClamps Included: \u003c\/b\u003eYes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Color: \u003c\/b\u003ePolished\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Connection: \u003c\/b\u003eSlip-Fit\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Cut: \u003c\/b\u003eAngle\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Diameter: \u003c\/b\u003e3.5\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Finish: \u003c\/b\u003eMatte\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Material: \u003c\/b\u003e304 Stainless Steel\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Quantity: \u003c\/b\u003e4\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Shape: \u003c\/b\u003eRound\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Tip Wall: \u003c\/b\u003eDouble-Wall\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExit Style: \u003c\/b\u003eRear\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eFinish: \u003c\/b\u003ePolished\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGrade Type: \u003c\/b\u003ePerformance\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eHangers Included: \u003c\/b\u003eYes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eInstall Difficulty: \u003c\/b\u003e2\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eMain Piping Diameter: \u003c\/b\u003e3\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eMuffler Finish: \u003c\/b\u003eNatural\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eMuffler Quantity: \u003c\/b\u003e2\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePipe Material: \u003c\/b\u003e304 Stainless Steel\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint01: \u003c\/b\u003eDirect fit for the 2015-2021 Subaru WRX\/STI\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint02: \u003c\/b\u003eDyno-proven maximum gains of up to 9 whp and 8 wtq and peak gains of up to 4 whp and 3 wtq using 93 octane fuel while maintaining safe AFRs on the stock tune (2015 WRX w\/ CVT)\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint03: \u003c\/b\u003eExtremely aggressive turbo and exhaust tone under acceleration and boost\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint04: \u003c\/b\u003eMates with most aftermarket downpipes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint05: \u003c\/b\u003eInstalls in under an hour\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint06: \u003c\/b\u003eDesigned with oval mufflers to prevent highway drone\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint07: \u003c\/b\u003eQuad 3.5-in staggered double wall, polished tips\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint08: \u003c\/b\u003eFull 304 stainless steel mandrel-bent construction\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint09: \u003c\/b\u003e3-in to 2.25-in exhaust split helps maintain proper exhaust velocity\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint10: \u003c\/b\u003eTIG-welded to perfection\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint11: \u003c\/b\u003eMishimoto Lifetime Warranty\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint12: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint13: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint14: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSellingPoint15: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Applications: \u003c\/b\u003e2015-2021 Subaru WRX--2015-2021 Subaru STI\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Chassis Codes: \u003c\/b\u003eVA--GH\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Engine Codes: \u003c\/b\u003eFA20DIT-- EJ257\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Includes: \u003c\/b\u003e(1) Stainless Steel Mid-Pipe w\/ 2-Bolt Flange--(1) Stainless Steel Mid-Pipe to Y-Section--(2) Stainless Steel Mufflers w\/ Quad 3.5-inch Staggered Double Wall Tips, Polished--(2) 2.25-inch V-Band Clamps--(1) 3-inch Exhaust-Band Clamp--(1) 2-Bolt Flange Gasket--(2) 3\/8-16, 1-1\/2-inch Hex Bolts, Stainless Steel--(2) 3\/8-16 Serrated Flange Hex Nuts, Stainless Steel--(2) M10 Washers, Stainless Steel--Mishimoto Lifetime Warranty\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Material: \u003c\/b\u003e304 Stainless Steel\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Note: \u003c\/b\u003eThis product has been designed to fit both manual and CVT transmission vehicles.----Mishimoto does not recommend installing this cat-back exhaust and the Mishimoto Performance Air Intake with the stock ECU programming. It is recommended that the customer is able to retune the vehicle’s ECU after installing the cat-back exhaust and the intake. Power gains will vary depending on the type of ECU tune that is applied to the vehicle.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Overall Height (Inches): \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Overall Length (Inches): \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Overall Width (Inches): \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Pipe Diameter: \u003c\/b\u003e3\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTechSpec Weight (Pounds): \u003c\/b\u003e42\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eExtended Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eChina\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eEmissions Compliance Exempt\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePacking Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e1\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eEA\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e20.77 x 20.77 x 20.77 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e47.54 POUNDS\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePDF:\u003c\/h3\u003e\r\n\u003cp\u003e\r\n\u003c\/p\u003e\u003cdiv\u003e\u003ca href=\"https:\/\/sdda.semadata.org\/Standard\/Mishimoto%20Automotive\/MMEXH-WRX-15_InstallGuide.pdf\" target=\"_blank\"\u003e\u003cimg src=\"data:image\/png;base64,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\" style=\"display:inline\"\u003e \u003c\/a\u003e\u003c\/div\u003e\r\n\r\n\u003cdiv id=\"sema-product-fitment\" class=\"product__accordion accordion fitment\"\u003e\u003c\/div\u003e","brand":"Mishimoto","offers":[{"title":"Default Title","offer_id":48162245116132,"sku":"FLDS-MMEXH-WRX-15","price":1326.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/7134\/1028\/files\/MMEXH-WRX-15_1.jpg?v=1773204404","url":"https:\/\/coastal-diesel.com\/products\/mishimoto-mmexh-wrx-15-cat-back-exhaust-fits-subaru-wrx-sti-2015-2021","provider":"Coastal Diesel \u0026 Performance","version":"1.0","type":"link"}