2015-2021 Subaru STI Exhausts Parts & Upgrades
Shop 2015-2021 subaru sti exhausts parts and performance upgrades at JDMuscle. We carry the top brands with guaranteed fitment for your 2015-2021 Subaru STI.
2015-2021 Subaru STI Exhausts
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![Invidia [08-14 WRX/ 08-21 STI] High Flow Catted Downpipe | HS08SW1DPC](//jdmuscleusa.com/cdn/shop/products/invidia-high-flow-catted-downpipe-subaru-wrx-2008-2014-sti-2008-2019-legacy-gt-2005-2009-hs08sw1dpc-front-pipes-and-downpipes-y-pipes-invidia-invhs08sw1dpc.jpg?v=1614517009&width=220)
Up to $390 off
In StockInvidia High Flow Catted Downpipe
Fits: 08-14 WRX, 08-21 STI
Regular price $861.00Sale price $861.00 Regular priceUnit price per$1,251.00 -
![GrimmSpeed OEM Downpipe to 3in Cat Back Adapter Turbo [Subaru Models, incl. 15-21 WRX/STI] | 077046](//jdmuscleusa.com/cdn/shop/products/grimmspeed-catback-adapter-stock-dp-to-aftermarket-3-in-subaru-wrx-sti-legacy-gt-forester-xt-077046-exhaust-gaskets-and-hardware-grimmspeed-grm077046.jpg?v=1614517761&width=220)
![GrimmSpeed OEM Downpipe to 3in Cat Back Adapter Turbo [Subaru Models, incl. 15-21 WRX/STI] | 077046](//jdmuscleusa.com/cdn/shop/products/grimmspeed-catback-adapter-stock-dp-to-aftermarket-3-in-subaru-wrx-sti-legacy-gt-forester-xt-077046-exhaust-gaskets-and-hardware-grimmspeed-grm077046-2.jpg?v=1614675435&width=220)
In StockGrimmSpeed OEM Downpipe to 3in Cat Back Adapter Turbo
Fits: Subaru Models, incl. 15-21 WRX/STI
Regular price $80.00Sale price $80.00 Regular priceUnit price per$80.00 -
In StockGrimmSpeed Turbo to Downpipe Gasket - Subaru Turbo
Regular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
![Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104](//jdmuscleusa.com/cdn/shop/products/blox-racing-axle-back-exhaust-subaru-2015-2020-wrx-2015-2020-sti-non-spt-axle-back-exhausts-blox-racing-bxex-51104.jpg?v=1614341853&width=220)
![Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104](//jdmuscleusa.com/cdn/shop/products/blox-racing-axle-back-exhaust-subaru-2015-2020-wrx-2015-2020-sti-non-spt-axle-back-exhausts-blox-racing-bxex-51104-2.jpg?v=1614341857&width=220)
Up to $32.90 off
In StockBlox Racing Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips
Fits: 15-21 WRX/STI
Regular price $296.10Sale price $296.10 Regular priceUnit price per$329.00 -
![GrimmSpeed [02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT] Uppipe to Turbo Gasket | 024001](//jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-up-pipe-to-turbo-gasket-gasket-024001-exhaust-gaskets-and-hardware-grimmspeed-grmgasket-024001.jpg?v=1614517788&width=220)
In StockGrimmSpeed Uppipe to Turbo Gasket
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $26.00Sale price $26.00 Regular priceUnit price per$26.00 -
![Turbo XS [WRX/STI] OEM Downpipe to 3in Cat - Back Adapter w/Standard Exhaust Gasket | ADA - OEMDP - 3CB - JDMuscleExhaust Gaskets and HardwaretxsADA-OEMDP-3CB](//jdmuscleusa.com/cdn/shop/products/turbo-xs-wrxsti-oem-downpipe-to-3in-cat-back-adapter-wstandard-exhaust-gasket-ada-oemdp-3cb-3432239.jpg?v=1770328593&width=220)
Up to $4 offTurbo XS OEM Downpipe to 3in Cat-Back Adapter w/Standard Exhaust Gasket
Fits: WRX/STI
Regular price $35.00Sale price $35.00 Regular priceUnit price per$39.00 -
![JDMuscle [15-21 WRX/STI] Pre-preg Carbon Fiber Exhaust Trim Covers](//jdmuscleusa.com/cdn/shop/files/image_21008_1874364499_1620165679_6091c42fe552b.jpg?v=1772885858&width=220)
In StockJDMuscle Pre-preg Carbon Fiber Exhaust Trim Covers
Fits: 15-21 WRX/STI
Only 7 leftRegular price $229.00Sale price $229.00 Regular priceUnit price per$229.00 -
RES X JDMuscle Valvetronic Catback Exhaust MT&CVT *Special Order*
Fits: 15-21 WRX/STI
Regular price From $2,370.00Sale price From $2,370.00 Regular priceUnit price per$2,370.00 -
![Tomei [02-14 WRX, 04-21 STI, 05-09 LGT, 05-08 FXT] Unequal Length Exhaust Manifold/ Header | TB6010-SB02A](//jdmuscleusa.com/cdn/shop/products/tomei-unequal-length-exhaust-manifold-subaru-wrx-2002-2014-sti-2004-2020-exhaust-headers-and-manifolds-tomei-tb6010-sb02a.jpg?v=1614535670&width=220)
![Tomei [02-14 WRX, 04-21 STI, 05-09 LGT, 05-08 FXT] Unequal Length Exhaust Manifold/ Header | TB6010-SB02A](//jdmuscleusa.com/cdn/shop/files/tomei-unequal-length-exhaust-manifold-2002-2014-wrx-2004-2021-sti-2005-2009-lgt-2005-2008-fxt-tb6010-sb02a-724209_500x375_fdb4fc10-610a-4882-9d2d-4660ce65554e.jpg?v=1686347698&width=220)
Up to $89 off
In StockTomei Unequal Length Exhaust Manifold/ Header | TB6010-SB02A
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 05-08 FXT
Only 5 leftRegular price $801.00Sale price $801.00 Regular priceUnit price per$890.00 -
![JDMuscle OEM Downpipe to 3in Cat Back Exhaust Adapter [Subaru Turbo Models] - JDMuscleExhaust Gaskets and HardwareJDM-EXS-S3](//jdmuscleusa.com/cdn/shop/files/jdmuscle-oem-downpipe-to-3in-cat-back-exhaust-adapter-subaru-turbo-models-1502085.png?v=1770322461&width=220)
In StockJDMuscle OEM Downpipe to 3in Cat Back Exhaust Adapter
Fits: Subaru Turbo Models
Only 20 leftRegular price $49.00Sale price $49.00 Regular priceUnit price per$49.00 -
![Remark [15-21 WRX/STI] Mid Pipe Kit Non Resonated | RO-CPVA-N](//jdmuscleusa.com/cdn/shop/products/remark-mid-pipe-kit-non-resonated-subaru-wrxsti-2015-2019-exhaust-mid-pipes-remark-ro-cpva-n.jpg?v=1745512176&width=220)
In StockRemark Mid Pipe Kit Non Resonated | RO-CPVA-N
Fits: 15-21 WRX/STI
Only 12 leftRegular price $755.00Sale price $755.00 Regular priceUnit price per$755.00 -
![Invidia [08-14 WRX, 08-21 STI] High Flow Cat w/ Extra 02 Bung Downpipe | HS08SW1DOC](//jdmuscleusa.com/cdn/shop/products/HS08SW1DOC_19b4e6d0-dee2-44d1-b6d5-bb1d139c297c.gif?v=1573673614&width=220)
![Invidia [08-14 WRX, 08-21 STI] High Flow Cat w/ Extra 02 Bung Downpipe | HS08SW1DOC](//jdmuscleusa.com/cdn/shop/products/HS08SW1DOC_2.gif?v=1573673614&width=220)
Up to $401.20 off
In StockInvidia High Flow Cat w/ Extra 02 Bung Downpipe
Fits: 08-14 WRX, 08-21 STI
Regular price $884.00Sale price $884.00 Regular priceUnit price per$1,285.20 -
![Invidia [08-14 WRX / 08-21 STI] Downpipe w/ High Flow Cat | HS08SW1DOCB](//jdmuscleusa.com/cdn/shop/products/hs08sw1docb.gif?v=1630007732&width=220)
Up to $401.20 off
In StockInvidia Downpipe w/ High Flow Cat | HS08SW1DOCB
Fits: 08-14 WRX / 08-21 STI
Only 17 leftRegular price $884.00Sale price $884.00 Regular priceUnit price per$1,285.20 -
Up to $27.20 off
In StockInvidia Stock Downpipe to 3in Exhaust Adapter - Universal
Regular price $61.00Sale price $61.00 Regular priceUnit price per$88.20 -
Up to $89 off
In StockTomei 08-14 WRX / 04-21 STI Equal Length Exhaust Manifold | TB6010-SB02B
Only 5 leftRegular price $801.00Sale price $801.00 Regular priceUnit price per$890.00 -
![GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter [Subaru Turbo Models inc. 15-21 WRX/STI] | 077044](//jdmuscleusa.com/cdn/shop/products/grimmspeed-3in-downpipe-adapter-for-subaru-077044-exhaust-gaskets-and-hardware-grimmspeed-grm077044.jpg?v=1614517852&width=220)
In StockGrimmSpeed 3in Downpipe to Stock Cat-Back Adapter
Fits: Subaru Turbo Models inc. 15-21 WRX/STI
Regular price $81.00Sale price $81.00 Regular priceUnit price per$81.00
![Invidia [08-14 WRX/ 08-21 STI] High Flow Catted Downpipe | HS08SW1DPC](http://jdmuscleusa.com/cdn/shop/products/invidia-high-flow-catted-downpipe-subaru-wrx-2008-2014-sti-2008-2019-legacy-gt-2005-2009-hs08sw1dpc-front-pipes-and-downpipes-y-pipes-invidia-invhs08sw1dpc.jpg?v=1614517009&width=220)
![GrimmSpeed OEM Downpipe to 3in Cat Back Adapter Turbo [Subaru Models, incl. 15-21 WRX/STI] | 077046](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-catback-adapter-stock-dp-to-aftermarket-3-in-subaru-wrx-sti-legacy-gt-forester-xt-077046-exhaust-gaskets-and-hardware-grimmspeed-grm077046.jpg?v=1614517761&width=220)
![GrimmSpeed OEM Downpipe to 3in Cat Back Adapter Turbo [Subaru Models, incl. 15-21 WRX/STI] | 077046](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-catback-adapter-stock-dp-to-aftermarket-3-in-subaru-wrx-sti-legacy-gt-forester-xt-077046-exhaust-gaskets-and-hardware-grimmspeed-grm077046-2.jpg?v=1614675435&width=220)
![Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104](http://jdmuscleusa.com/cdn/shop/products/blox-racing-axle-back-exhaust-subaru-2015-2020-wrx-2015-2020-sti-non-spt-axle-back-exhausts-blox-racing-bxex-51104.jpg?v=1614341853&width=220)
![Blox Racing [15-21 WRX/STI] Stainless Steel Axle Back w/ Single Wall 3.5 Inch Polished Tips | BXEX-51104](http://jdmuscleusa.com/cdn/shop/products/blox-racing-axle-back-exhaust-subaru-2015-2020-wrx-2015-2020-sti-non-spt-axle-back-exhausts-blox-racing-bxex-51104-2.jpg?v=1614341857&width=220)
![GrimmSpeed [02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT] Uppipe to Turbo Gasket | 024001](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-up-pipe-to-turbo-gasket-gasket-024001-exhaust-gaskets-and-hardware-grimmspeed-grmgasket-024001.jpg?v=1614517788&width=220)
![Turbo XS [WRX/STI] OEM Downpipe to 3in Cat - Back Adapter w/Standard Exhaust Gasket | ADA - OEMDP - 3CB - JDMuscleExhaust Gaskets and HardwaretxsADA-OEMDP-3CB](http://jdmuscleusa.com/cdn/shop/products/turbo-xs-wrxsti-oem-downpipe-to-3in-cat-back-adapter-wstandard-exhaust-gasket-ada-oemdp-3cb-3432239.jpg?v=1770328593&width=220)
![JDMuscle [15-21 WRX/STI] Pre-preg Carbon Fiber Exhaust Trim Covers](http://jdmuscleusa.com/cdn/shop/files/image_21008_1874364499_1620165679_6091c42fe552b.jpg?v=1772885858&width=220)
![Tomei [02-14 WRX, 04-21 STI, 05-09 LGT, 05-08 FXT] Unequal Length Exhaust Manifold/ Header | TB6010-SB02A](http://jdmuscleusa.com/cdn/shop/products/tomei-unequal-length-exhaust-manifold-subaru-wrx-2002-2014-sti-2004-2020-exhaust-headers-and-manifolds-tomei-tb6010-sb02a.jpg?v=1614535670&width=220)
![Tomei [02-14 WRX, 04-21 STI, 05-09 LGT, 05-08 FXT] Unequal Length Exhaust Manifold/ Header | TB6010-SB02A](http://jdmuscleusa.com/cdn/shop/files/tomei-unequal-length-exhaust-manifold-2002-2014-wrx-2004-2021-sti-2005-2009-lgt-2005-2008-fxt-tb6010-sb02a-724209_500x375_fdb4fc10-610a-4882-9d2d-4660ce65554e.jpg?v=1686347698&width=220)
![JDMuscle OEM Downpipe to 3in Cat Back Exhaust Adapter [Subaru Turbo Models] - JDMuscleExhaust Gaskets and HardwareJDM-EXS-S3](http://jdmuscleusa.com/cdn/shop/files/jdmuscle-oem-downpipe-to-3in-cat-back-exhaust-adapter-subaru-turbo-models-1502085.png?v=1770322461&width=220)
![Remark [15-21 WRX/STI] Mid Pipe Kit Non Resonated | RO-CPVA-N](http://jdmuscleusa.com/cdn/shop/products/remark-mid-pipe-kit-non-resonated-subaru-wrxsti-2015-2019-exhaust-mid-pipes-remark-ro-cpva-n.jpg?v=1745512176&width=220)
![Invidia [08-14 WRX, 08-21 STI] High Flow Cat w/ Extra 02 Bung Downpipe | HS08SW1DOC](http://jdmuscleusa.com/cdn/shop/products/HS08SW1DOC_19b4e6d0-dee2-44d1-b6d5-bb1d139c297c.gif?v=1573673614&width=220)
![Invidia [08-14 WRX, 08-21 STI] High Flow Cat w/ Extra 02 Bung Downpipe | HS08SW1DOC](http://jdmuscleusa.com/cdn/shop/products/HS08SW1DOC_2.gif?v=1573673614&width=220)
![Invidia [08-14 WRX / 08-21 STI] Downpipe w/ High Flow Cat | HS08SW1DOCB](http://jdmuscleusa.com/cdn/shop/products/hs08sw1docb.gif?v=1630007732&width=220)
![GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter [Subaru Turbo Models inc. 15-21 WRX/STI] | 077044](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-3in-downpipe-adapter-for-subaru-077044-exhaust-gaskets-and-hardware-grimmspeed-grm077044.jpg?v=1614517852&width=220)