2015-2021 Subaru STI

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GrimmSpeed Stock Downpipe to Aftermarket 3" Catback Adapter

$60.00

$60.00 - $60.00

$60.00

$54.00

$54.00 - $54.00

$54.00

DESCRIPTION The Grimmspeed OEM Downpipe To 3-Inch Cat-Back Adapter is very popular for those of you who are retaining the stock downpipe and need t...

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GrimmSpeed Turbo to Downpipe Gasket 2002-2014 WRX / 2004-2021 STI

$20.00

$20.00 - $20.00

$20.00

$18.00

$18.00 - $18.00

$18.00

DESCRIPTION The GrimmSpeed Turbo To Downpipe Gasket is made using a premium multi-layer steel with a stainless steel fire-ring, this gasket surpass...

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GrimmSpeed Donut Gasket 2002-2014 WRX / 2004-2021 STI

$17.00

$17.00 - $17.00

$17.00

$15.30

$15.30 - $15.30

$15.30

DESCRIPTION This is the GrimmSpeed Downpipe Donut Gasket. This gasket is available as a direct replacement for your leaking OEM donut gasket and fe...

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GrimmSpeed 2 Bolt Ceramic Coated Up-Pipe 2002-2014 WRX / 2004-2021 STI

$309.00

$309.00 - $309.00

$309.00

$278.10

$278.10 - $278.10

$278.10

DESCRIPTION The GrimmSpeed Ceramic Coated 2 Bolt Up-Pipe has been designed to be a high-performance direct replacement for your factory up-pipe to ...

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Corsa Performance Catback Exhaust Polished Tips 2015-2021 WRX/STI

$1,856.99 - $1,856.99

$1,856.99

$1,856.99 - $1,856.99

$1,856.99

Here, you are looking at the Corsa Performance 3-Inch Dual Rear Exit Catback Exhaust System with Twin 3.5-inch Tips. This exhaust system has been d...

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Corsa Performance Catback Exhaust Polished Black Tips 2015-2021 WRX/STI

$1,928.99 - $1,928.99

$1,928.99

$1,928.99 - $1,928.99

$1,928.99

Here, you are looking at the Corsa Performance 3-Inch Dual Rear Exit Catback Exhaust System with Twin 3.5-inch Tips. This exhaust system has been d...

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Invidia N1 Titanium Catback Exhaust 2015-2021 WRX/STI

$2,622.20

$2,622.20 - $2,622.20

$2,622.20

$1,704.43

$1,704.43 - $1,704.43

$1,704.43

DESCRIPTION The Invidia N1 Full Titanium Cat-Back Exhaust System with Burnt End Tips is the ultimate upgrade for 2015-2021 Subaru WRX and STI owner...

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Invidia Gemini Full Titanium Quad Tip Catback 2015-2021 WRX/STI

$3,983.00

$3,983.00 - $3,983.00

$3,983.00

$2,588.95

$2,588.95 - $2,588.95

$2,588.95

DESCRIPTION The Invidia Gemini R400 Full Titanium Cat-Back Exhaust System is the ultimate performance upgrade for 2015-2021 Subaru WRX and STI mode...

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HKS Super Turbo Muffler Titanium Exhaust 2015-2021 WRX/STI

$5,670.00

$5,670.00 - $5,670.00

$5,670.00

$4,819.50

$4,819.50 - $4,819.50

$4,819.50

PURSUIT OF THE IDEAL EXHAUST SYSTEM With the HKS Super Turbo Muffler Exhaust being made of titanium allows a significent weight reduction to 13.4...

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AWE Tuning Touring to Track Conversion Kit 2015-2021 WRX/STI

$440.00 - $440.00

$440.00

$440.00 - $440.00

$440.00

BOXER® uncorked: Proudly engineered, designed, and manufactured in-house at AWE, in the USA Rasp-free, aggressive BOXER® tone without the drone ...

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AWE Tuning Track to Touring Conversion Kit 2015-2021 WRX/STI

$720.00 - $720.00

$720.00

$720.00 - $720.00

$720.00

BOXER® uncorked: Proudly engineered, designed, and manufactured in-house at AWE, in the USA Rasp-free, aggressive BOXER® tone without the drone ...

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Tomei Expreme Equal Length Exhaust Manifold 2002-2014 WRX/ 2004-2021 STI

$890.00

$890.00 - $890.00

$890.00

$801.00

$801.00 - $801.00

$801.00

This is the Tomei Equal Length Exhaust Manifold and is a great upgrade for those of you looking to optimize the exhaust flow for improved power and...

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Tomei Expreme Ti Titanium Catback 2008-2021 WRX / 2011-2021 STI

$1,290.00

$1,290.00 - $1,290.00

$1,290.00

$1,161.00

$1,161.00 - $1,161.00

$1,161.00

For those of you looking to add performance by losing weight and adding horsepower, then you will be pleased with the Tomei Expreme Titanium Cat-Ba...

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Tomei Expreme Unequal Length Headers 2002-2014 WRX/ 2004-2021 STI

$890.00

$890.00 - $890.00

$890.00

$801.00

$801.00 - $801.00

$801.00

This is the Tomei Expreme Unequal Length Exhaust Manifold. This is a direct replacement for your factory exhaust manifold to save weight, improve t...

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Invidia R400 Gemini Titanium Tip Catback Exhaust 2015-2021 WRX/STI

$2,640.40

$2,640.40 - $2,640.40

$2,640.40

$1,399.00

$1,399.00 - $1,399.00

$1,399.00

DESCRIPTION The Invidia Gemini R400 Single Layer Cat-Back Exhaust System with Titanium Burnt Tips is a premium performance upgrade for 2015-2021 Su...

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Remark Sports Touring Catback 2015-2021 WRX/STI

$1,395.00 - $1,595.00

$1,395.00

Part Number RK-C4076S-01 Non-Res Stainless Steel RK-C4076S-01C Resonated Stainless Steel RK-C4076S-01T Non-Res Burnt Stainless RK-C407...

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GrimmSpeed 2 Bolt Up-Pipe 2002-2014 WRX / 2004-2021 STI

$279.00

$279.00 - $279.00

$279.00

$251.10

$251.10 - $251.10

$251.10

DESCRIPTION We designed this up pipe using our in-house FARO Arm along with the latest and greatest Solidworks CAD Software. This assures that we c...

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GrimmSpeed Un-Resonated Catback 2011-2021 WRX/STI

$1,419.00

$1,419.00 - $1,419.00

$1,419.00

$1,277.10

$1,277.10 - $1,277.10

$1,277.10

DESCRIPTION The GrimmSpeed Cat-Back Exhaust System has combined premium materials, along with a larger piping diameter and smooth bends to provide ...

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GrimmSpeed Resonated Catback 2011-2021 WRX/STI

$1,532.00

$1,532.00 - $1,532.00

$1,532.00

$1,378.80

$1,378.80 - $1,378.80

$1,378.80

DESCRIPTION The GrimmSpeed Cat-Back Exhaust System has combined premium materials, along with a larger piping diameter and smooth bends to provide ...

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PLM Midpipe 2015-2021 WRX/STI

$495.00 - $545.00

$495.00

PLM Private Label Mfg. Power Driven 3" Non-Resonated Midpipe Kit for Subaru WRX STI 3" 2015-2019 was made for maximizing HP gains, more flow, more ...

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PLM Equal Length Headers 2015-2021 STI

$660.00 - $660.00

$660.00

$660.00 - $660.00

$660.00

PLM Subaru WRX & STi EJ EJ25 Equal Length Header Newly released - Oct. 2021! Guarantee the best value and will be the best selling EJ-series he...

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PLM Axle-Back Muffler Deletes 2015-2021 WRX/STI

$349.00

$299.00 - $349.00

$349.00

$279.20 - $299.00

$279.20

PLM (Private label Mfg.) Axle-Back exhaust also known as Muffler Bypass, Muffler Deletes, or Track Pipes are made of tig welded stainless steel, li...

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PLM EWG 44mm Up-Pipe w/ Dump Tube 2002-2014 WRX / 2004-2021 STI

$339.00

$339.00 - $339.00

$339.00

$271.20

$271.20 - $271.20

$271.20

PLM Power Driven Subaru 44mm EWG Up-Pipe with Dump Tube features a unique designed Up-pipe which gives you the option to install a 44mm or 45mm ext...

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PLM EWG 38mm Up-Pipe w/ Dump Tube 2002-2014 WRX / 2004-2021 STI

$339.00

$339.00 - $339.00

$339.00

$271.20 - $339.00

$271.20

PLM Private Label Mfg. Power Driven Subaru EWG Up-Pipe with Dump Tube 38mm features a unique designed up pipe which gives you the option to install...

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ETS Axleback Midpipe 2015-2021 WRX/STI

$745.00 - $845.00

$745.00

ETS MaxFlow V2 Header 2004-2021 STI

$1,495.00 - $1,495.00

$1,495.00

$1,495.00 - $1,495.00

$1,495.00

The wait is over! Extreme Turbo Systems is proud to release our new Subaru STI V2 MaxFlow Exhaust Header for the 2004+ Subaru STI. We designed our ...

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