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Vehicle Details

Subaru introduced the next generation of the WRX/STI August 2000 to Japan, with first models making their way across the globe from 2001. Unfortunately the 2-door STI from previous generation would be have an equivalent, with all models overall larger in size with the sedan increasing its width by 40 millimetres (1.6 in), and the wagon increasing by just a fractional 5 millimetres (0.2 in)

Turbocharged versions of the 2.0- and 2.5-liter engines were offered in the WRX and WRX STI models depending on region. The STI featured a more powerful 2.0-liter (2.5-liter outside of the Japanese market) EJ25, wtih WRX models featuring a 2.0-liter EJ20 turbocharged boxer engine until 2005, after which they switched to the 2.5-liter EJ25.

As with the previous generation, the infamous boxer burble and impressive handling and performance characteristics made this generation a hugely popular platform to modify with an abundance of parts available in the aftermarket space.

Intercooler

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Front Mount Intercooler Kit
Bolt on FMIC kit to suit 2002-2007 WRX and STI, includes Intercooler, piping, silicon hoses, clamps and necessary brackets.
Ships from Australia
$390.00 AUD
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REV9 Front Mount Intercooler Kit
Bar & Plate Design for Better Cooling. Max Horsepower Capacity: 300-550HP, retains fog lights.
Ships from the USA
$448.00 USD
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Top Mount Turbo Intercooler
02-07 SUBARU WRX OR STI TOP MOUNT INTERCOOLER with Y-PIPE KIT. Direct bolt on, no modification required.
Ships from the USA
$219.99 USD
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HDi Front Mount Intercooler Kit (790x225mm)
790mm x 225mm x 92mm Tube and Fin designed intercooler capable of over 700 Horsepower.
Ships from Australia
$650.00 AUD
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Perrin Front Mount Intercooler Kit W/ Red Piping
This above dyno graph was pulled from the testing we did comparing the OEM Top Mounted Intercooler, PERRIN Top Mounted Intercooler and the PERRIN Front Mount Intercooler. We had the car all set so we could do these tests back to back with only a couple minutes between runs.
Ships from the USA
$1,692.00 USD
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Grimmspeed Thermal Dispersant Black TMIC - 02-07 WRX
Your OEM TMIC does just fine at stock boost under normal use, but as soon as you start putting some real heat into it with higher boost or harder use, it heat-soaks beyond recovery.*Quick Specs** Smooth End Tank Internal Contours - Designed for maximum flow* Machined Throttle Body Connection - Tight, leak and trouble-free seal*
Ships from the USA
$750.00 USD
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Grimmspeed TMIC Splitter (06-07 WRX/STI)
Grimmspeed TMIC Splitter for Subaru 06-07 WRX/STI
Ships from the USA
$195.00 USD

Exhaust

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Invidia N1 Racing 101mm Titanium Tip Catback Exhaust
For a good balance of price and performance, Invidia offers the motorsports enthusiasts a strong line-up of Invidia N1 Exhausts. Constructed with high-quality SUS304 stainless steel, CNC-machined flanges, and manufactured with a polished finish. Each system features mandrel-bent stainless steel piping for maximum exhaust flow and reduced back pressure. These exhausts are engineered to produce strong mid to top-end power gains, as well as an increase in horsepower and torque.
Ships from the USA
$562.03 USD
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Top Fuel KS Racing Equal Length Headers
Equal length headers from TOP FUEL to suit 2001-2007 WRX and STI.
Ships from Australia
$638.26 AUD
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Invidia Q300 110mm Rolled Catback
The Invidia Q300 Exhaust features a flat bottom shaped muffler design that results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater horsepower, torque gains and a rich deep sporty sound.
Ships from the USA
$672.29 USD
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REV9 3-inch Stainless Downpipe (Catless)
100% SUS-304 stainless steel with computerized mandrel-bends and Cast Elbow Bellmouth design. Gain 10-16 horsepower and torque on a stock vehicle.
Ships from the USA
$139.00 USD
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Kinugawa Up Pipe (Single Scroll)
Stainless SUS304 / 2.5mm thickness. Connecting Type: 4-1. Pipe Diameter: Up Pipe: 57 / 60mm.
Ships from the USA
$169.00 USD
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Perrin Equal Length Big-tube Header
The equal length design of the PERRIN header, produces smoother more balanced exhaust pulses flow from the head to the turbocharger giving you the best of two worlds. Quicker turbo response as well as more horsepower and torque throughout the entire RPM band. While designed to fit to the factory up-pipe, our header will mate with any aftermarket up-pipe that works with the OEM header.
Ships from Australia
$1,699.90 AUD
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Perrin Rotated Turbo Tuner Kit For Garrett Turbo (02-07 Wrx / Sti)
The Rotated Turbo Tuner kit is designed around the customer who already may have a turbo, and/or a wastegate, and is looking to install them onto their WRX or STI. Every kit includes all necessary items (except turbo and wastegate) to install on your WRX/STI (with Front Mounted Intercooler).
Ships from the USA
$1,356.00 USD
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Grimmspeed 2-bolt 38mm/40mm Uppipe Thermal Coat W/ External Wastegate
The GrimmSpeed EWG has a larger diameter than a stock internal wastegate; this allows the exhaust gas to be released faster, which improves boost control, maintains maximum boost longer in the rpm range. All of these together will give you a 10-40 HP INCREASE.
Ships from the USA
$380.00 USD
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Grimmspeed Up Pipe Ceramic Coated
Gaskets Included, Heavy Duty GrimmSpeed Gaskets Flex Joint, Ceramic Coating, 321 Stainless Steel Tuned-Bellow Tubing Thickness.
Ships from the USA
$265.00 USD

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