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2015-2021 WRX & STI Mods

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Radium Master Cylinder Brace 2015-2021 WRX/STI

$94.95
$94.95 - $94.95
$94.95
$99.95
$99.95 - $99.95
$99.95

This Radium Engineering master cylinder brace is compatible with the left hand drive (LHD) 15-21 Subaru WRX, 15-21 Subaru WRX STi, and 14-18 Forest...

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Radium TGV to Head Gasket 2002-2014 WRX / 2004-2021 STI

$8.50
$8.50 - $8.50
$8.50
$8.95
$8.95 - $8.95
$8.95

Metal reinforced, crush resistant, high temperature graphite fiber. Fits most Subaru EJ engines. Installs between intake manifold (TGVs) and cylind...

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Radium Catch Can Kit 2015-2021 WRX

$417.95
$417.95 - $417.95
$417.95
$439.95
$439.95 - $439.95
$439.95

DESCRIPTION High-powered modified Subaru engines tend to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can may...

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Radium Catch Can Kit 2002-2014 WRX / 2004-2021 STI

$398.95
$398.95 - $398.95
$398.95
$419.95
$419.95 - $419.95
$419.95

DESCRIPTION The catch can draws out oil and water condensation from the crankcase gasses that would otherwise be drawn into the intake manifold. Th...

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Radium Top Feed Fuel Rails 2002-2014 WRX/ 2007-2021 STI

$199.45
$199.45 - $199.45
$199.45
$209.95
$209.95 - $209.95
$209.95

DESCRIPTION These fuel rails have the same mounting and injector spacing as the 20-0577-02. However, these fuel rails feature a 8AN ORB port machin...

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Radium Fuel Line Retaining Kit 2008-2021 STI

$94.95
$94.95 - $94.95
$94.95
$99.95
$99.95 - $99.95
$99.95

The Radium Engineering fuel line retaining kit supports large aftermarket fuel lines under the 08-21 Subaru Impreza, WRX, and STi.The retainers are...

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If you own a Subaru WRX STI, you know you have the perfect platform to craft a masterpiece on wheels. At WRXDaily, we understand that every enthusiast has a vision, and we’re here to offer the WRX STI mods you need to bring yours to life. With products tailored to elevate performance, enhance style, and perfect handling, our curated selection puts endless possibilities at your fingertips. 

No matter what you need, our Subaru WRX STI modifications deliver quality and reliability you can trust. From high-performance upgrades to must-have Subaru STI accessories, we have everything you need to create a car that’s as bold and unique as your passion for driving. Own a 2018 WRX? We offer a variety of 2018 WRX parts designed to fit your specific model. 

With WRXDaily, your Subaru becomes a true reflection of your style and ambition. Browse our selection of WRX STI mods today and start your next build!