2015-2021 Subaru STI

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

EMISSIONS SEMA Certified - SC -GRM01-0145 for listed fitments CARB Certified - EO - #D-896 for listed fitments A top of the line Up-Pipe built to ...

DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...

DESCRIPTION The GrimmSpeed Stage 1 Power Package combines GrimmSpeed's Cold Air Intake System, as well as the GrimmSpeed 3-Port Electronic Boost Co...

The bar has been raised. So, you probably already know that you want an intercooler with maximum cooling and minimum restriction, but when it comes...

DESCRIPTION The GrimmSpeed Front Mount Intercooler Kit from GrimmSpeed has been designed with a great balance of low-pressure drop and high-tempera...

XR Red   Compressor wheel - 79HTZ Flow rating - 65LB per minute CW Measurements - 57MM Inducer / 79MM Exducer TW Measurements - 67.7MM Inducer / 6...

XR Blue™   Compressor wheel - 73HTZ™ Flow rating - 57LB per minute CW Measurements - 52.6MM Inducer / 73MM Exducer TW Measurements - 60.8MM Induc...

New for 2020! All FP Black model turbos will come standard with a black coated compressor cover!   Compressor wheel - 82HTZ Flow rating - 71LB per...

Oil supply line and gasket set included! FP Red Compressor wheel - HTZ 79 Flow rating - 65LB per minute CW Measurements - 57.3MM Inducer / 79MM Ex...

FP Black HTZ Compressor wheel - 82HTZ Flow rating - 71LB per minute CW Measurements - 59.1MM Inducer / 82MM Exducer TW Measurements - 67.3MM ...

Oil supply line and gasket set included! FP Blue™ Compressor wheel - 73HTZ Flow rating - 57LB per minute CW Measurements - 52.6MM Inducer / 73MM E...

Oil Supply Line and gasket set included! FP Green HTZ Compressor wheel - 76HTZ Flow rating - 61LB per minute CW Measurements - 54.8MM Inducer / 76...

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 ...

Draw from our success of the PLM strut tower bar for Honda models, we are pleased to offer our strut tower brace for Subaru WRX & STI. Made fr...

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, ...

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...

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...

SuperPro has a complete replacement and repair upgrade solution for control arms.The SuperPro kit comes with arms with heavy duty ball joints, brac...

Designed to maximise the benefit of Roll Control Adjustable Sway Bars and be used in place of that hard to find O.E link.Features & Benefits 6...

SuperPro Bushings are the perfect suspension upgrade or replacement solution! Lifetime Warranty Enhances your vehicles handling and performance Un...

If you are looking for increased cornering capabilities with decreased body roll, Roll Control sway bars are the answer! By being adjustable the Sw...

If you are looking for increased cornering capabilities with decreased body roll, Roll Control sway bars are the answer! By being adjustable the Sw...

If you are looking for increased cornering capabilities with decreased body roll, Roll Control sway bars are the answer! By being adjustable the Sw...

SuperPro Roll Control WRX Supaloy Front Lower Control Arms increase the handling of your WRX to better than that of the STI.The arms are built with...

SuperPro Roll Control WRX Supaloy Front Lower Control Arms increase the handling of your WRX to better than that of the STI. Alloy light-weight an...

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 ...

The ETS Subaru STI Turbo Kit is one of the most complete kits on the market utilizing optimal intercooler pipe routing and a larger ported s-cover ...

This is handmade here in the USA at Extreme Turbo Systems. This will bolt up with a 3.0"-4.0" ETS intercooler and requires no additional trimming o...