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Aftermarket Performance Parts for the Sti
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AEM ECU Patch/Extension Harness - STi 04-09
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AEM ECU Patch/Extension Harness - STi 04-09

AEM's ECU Patch / Extension Harnesses work with most engine management systems and allow you to install turbo timers, data loggers and other ancillary electronics without having to cut and splice into your factory wiring harness.

Fits:


Our Price: $182.67
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AQ Motorsports 04+ Subaru Oil Cooler
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AQ Motorsports 04+ Subaru Oil Cooler

With a 16 row oil cooler (over 1 ft long) with ultra-high quality lines and fittings, the AQ Motorsports oil cooler is the perfect upgrade for the aggressive street car or track day warrior.

Subaru's run extremely hot at the track or with sustained aggressive driving. The stock oil...


Our Price: $559.95
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CTEK Multi US 25000 Battery Charger
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CTEK Multi US 25000 Battery Charger

CTEK MULTI US 25000 (Part No. 56-674) is an 8-step, fully automatic
primary switch mode battery charger. A powerful charger for 12V
batteries that require rapid charging such as in garages and cars.
Unlike old traditional battery chargers CTEK chargers are designed with


Our Price: $242.95
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CTEK Multi US 4.3 Battery Charger
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CTEK Multi US 4.3 Battery Charger

The MUS 4.3 (Part No. 56-864) is a charger that offers state of the art technology that was previously only found in CTEK’s professional product range. The charger can solve a broad range of battery-related problems and is the perfect charger for those with high demands. The MUS 4.3 offer...


Our Price: $64.95
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CTEK Multi US 7002 Battery Charger
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CTEK Multi US 7002 Battery Charger

The MULTI US 7002 (Part No. 56-353) is the ideal battery charger for your car. The battery charger is well suited for all-year use. Thanks to its SUPPLY mode the battery charger provides power even without a battery. The SUPPLY mode is indispensable when changing the battery as you avoid ...


Our Price: $119.95
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Cusco Oil Catch Can - WRX STI 2006-2007
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Cusco Oil Catch Can - WRX STI 2006-2007

The unburned gas which is toxic can remain in the cylinder head of a normal production engine can be returned and sent to the combustion room along with the mixture with this oil tank. Where as with competition cars the unburned gas let out in the air. This tank will not pollute the air and r...


Our Price: $117.90
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Cusco WRX STI 2002 - 2005 Oil Catch Can
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Cusco WRX STI 2002 - 2005 Oil Catch Can

The unburned gas which is toxic can remain in the cylinder head of a normal production engine can be returned and sent to the combustion room along with the mixture with this oil tank. Where as with competition cars the unburned gas let out in the air. This tank will not pollute the air and r...


Our Price: $117.90
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HKS SSQ Version 4 Blow Off Valve Kit - STi 08-11
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HKS SSQ Version 4 Blow Off Valve Kit - STi 08-11

In 1994, HKS introduced the first Sequential Blow-Off Valve  featuring a unique, pull-type, sequential valve structure and a differential pressure control system.  This advanced pull-type relief system allowed for stable operating ranges from low to high boost pressures.  Since imi...


Our Price: $330.95
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Kartboy Delrin Shift Knob - STi 6-Speed
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Kartboy Delrin Shift Knob - STi 6-Speed

For the extra bit of style and performance, add a Kartboy Delrin Shift Knob to your Kartboy Shift Lever (works with the stock lever as well.) This computer designed and CNC turned Delrin knob fits the hand with comfort, but allows a firm grip for crucial shifts. No set screws or cheezy adapter sl...


Our Price: $45.00
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Kartboy Front License Plate Delete Black - STi 2004+
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Kartboy Front License Plate Delete Black - STi 2004+

Aluminum barstock with a brushed look, Black Anodized then engraved with their stylish KARTBOY logo. Great way to cover the ugly holes on the factory bumper. All necessary hardware included. No drilling required.


Our Price: $25.00
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Perrin Battery Tie Down
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Perrin Battery Tie Down

The PERRIN Battery Tie Down STIFFI is a quick and affordable upgrade. Keep your battery from moving in all situations.

The PERRIN Performance Battery Tie Down is machined from billet aluminum with radiused edges and countersunk mounting holes.

Available in either b...


Our Price: $53.99
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Perrin License Plate Delete Black: Subaru STi
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Perrin License Plate Delete Black: Subaru STi

The PERRIN PerformanceTM License Plate Delete covers  the unsightly holes left by the factory in your front bumper.  Machined from 6061T6 aluminum, incorporates the PERRIN™ logo and anodized for a precise fit and attractive finish to the front of you...



Our Price: $43.19
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Perrin Turbo Blanket
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Perrin Turbo Blanket

The PERRIN Turbo blanket fits snugly around turbine housing of your turbo to keep nearly all radiant heat away from your intercooler, intake and other engine components. The Turbo blanket features 3-layer construction. Including an outer cover made from Silicone Impregnated Fiberglass, an inner l...


Our Price: $116.99
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Perrin Turbo Heat Shield
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Perrin Turbo Heat Shield

Don't leave your turbo uncovered! Protect your intercooler from radiant heat from your turbo!

The PERRIN turbo heat shield is CNC formed from 304 stainless steel. The backside of the shield is cut to fit all aftermarket downpipes. It is also adjustable front to back allowing the t...


Our Price: $71.99
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Tein H Tech Springs - STi 05-07
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Tein H Tech Springs - STi 05-07

High Tech is made from a new material called "Vanadium" which is much lighter then other spring and increases flexibility.

*Features*
* All spring are designed specifically to fit each car for maximum performance
* About a 1 inch drop for a more attractive a...


Our Price: $284.00
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Torque Solution License Palte Delete - Subaru Sti 2004-2011
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Torque Solution License Palte Delete - Subaru Sti 2004-2011

Torque Solution License Plate Delete covers the  holes left by the factory in your front bumper. Machined from Billet 6061 aluminum, incorporates the Torque Solution logo lazer ingraved and anodized for a precise fit and attractive finish to the front of your Subaru
...


Our Price: $30.00
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Torque Solution Shorty Billet Antenna - Subaru STi 2008-2011
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Torque Solution Shorty Billet Antenna - Subaru STi 2008-2011

Replace your long factory antenna with our billet shorty antenna,Giving you a new style to your car.  
 
• 2 inch Tall
• Installs in under 2 minutes
• Made out of lightweight 6061-T6 billet aluminum
• Black anodized / ...


Our Price: $24.99
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Aftermarket Performance Parts for the Sti
stiperformanceparts.com is not a subaru authorized sti parts dealer or repair facility. stiperformanceparts.com is not affiliated, related to, or endorsed by Subaru of America or Fuji Heavy Industries LTD in any way. stiperformanceparts.com is an independent retailer of performance parts and accessories that is not affiliated with Subaru of America (Fuji Heavy Industries LTD). Use of trademarks is done on a fair use basis and without intent to compete with, or take advantage of Subaru or its trademarks. For more information on Subaru please visit http://www.subaru.com