2015-2021 Subaru STI

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...

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

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

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 ...

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...

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...

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...

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

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...

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

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

PLM Private Label Mfg. Power Driven 3" Non-Resonated Midpipe Kit for Subaru WRX STI 3" 2015-2021 was made for maximizing HP gains, more flow, more ...

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...

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...

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...

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 ...

ETS now offers the catback rear secion separately if you're looking to change up your ETS 2015-2021 WRX/STI exhaust system!  Extreme - No Muffler...

The ETS Axle-back exhaust for the 2015-2021 WRX and STI utilizes a full stainless steel construction. The axle back is 2.5" that mates to the stoc...