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ATP GT2871R Bolt-On Garrett Turbo for Subaru 2002-07 WRX & 2004-17 STi

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  • ATP GT2871R Bolt-On Garrett Turbo for Subaru 2002-07 WRX & 2004-17 STi (ATP-SUB-004)
  • ATP GT2871R Bolt-On Garrett Turbo for Subaru 2002-07 WRX & 2004-17 STi (ATP-SUB-004)
  • ATP GT2871R Bolt-On Garrett Turbo for Subaru 2002-07 WRX & 2004-17 STi (ATP-SUB-004)
  • ATP GT2871R Bolt-On Garrett Turbo for Subaru 2002-07 WRX & 2004-17 STi (ATP-SUB-004)

ATP GT2871R Bolt-On Garrett Turbo for Subaru 2002-07 WRX & 2004-17 STi

Part #:
ATP-SUB-004
Availability:
Special Order From Manufacturer (Usually Ships In 1-2 Business Days)
$1,745.00
Qty:

Not CARB legal: Not for sale or street use in CA & CARB states.

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Vehicle Fitment

 2002-2005 Subaru Impreza WRX 2.0L

 2006-2007 Subaru Impreza WRX 2.5L

 2004-2007 Subaru Impreza WRX STI 2.5L

 2008-2014 Subaru Impreza WRX STI 2.5L

 2015-2017 Subaru WRX STI 2.5L

 2004-2008 Subaru Forester XT 2.5L

Note: "Bolt-on" refers to turbo installation location only. Supporting modifications and tuning is required. (Built engine block recommended)

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Bigger than the GT28RS, ATP's GT2871R has slower spool, but can handle around 400 horsepower. This is a good turbo for built-engine 2.0L WRXs that don't mind adding some lag for some more top-end performance. This turbo is still pretty small for a 2.5L, but will have rapid spool if you decide to go that route. The GT2871R uses a 53.85mm 76 trim turbine wheel and 71mm, 56 trim compressor wheel.

ATP's range of bolt-on Garret turbos are designed to provide the performance of a dual ball-bearing turbocharger with the convenience of a stock-location turbo. The ATP GT2871R WRX & STI turbo easily installs in place of the stock journal bearing turbo, due to the high-flowing GT-inspired ATP WRX & STI exhaust housing and a series of custom engineered components built to suit the installation.

The ATP GT2871R drop-in turbo consists of a Garrett factory assembled and high speed balanced dual ball bearing CHRA which is then assembled into a set of CNC machine ported housings that have been optimized in every aspect for maximum flow and efficiency and designed to attach to the WRX & STI uppipe. This turbo includes all the necessary oil & coolant supply hardware to seamlessly attach the turbo to your WRX or STI. ATP's focus with this turbos isn't peak power numbers; they're designed to make more torque under the curve and give you more accessible power.

Additional Notes:
ATP recommends that you use a bellmouth downpipe with their bolt-on Garret WRX & STI turbos for optimal performance. Stock-type flat plate WRX & STI downpipes (HKS, DC Sports, etc.) and divorced wastegate downpipes (PERRIN, Invidia Divorced) do not allow enough clearance for ATP's custom wide-swinging wastegate door. This can result in boost creep, spiking, and inaccurate boost control. The Turbo XS & Invidia Bellmouth downpipes would be good choices for use with this turbo.

In addition, ATP reccomends a higher flowing 3" turbo inlet, like the PERRIN, Agency Power or AMR. If you must use a stock-sized inlet, you will need to source a 2.4" to 3" reduction coupler, as the ATP turbos have a 3" inlet. We recommend using a matching-sized 3" inlet for minimal restriction, since GT turbos thrive with minimal inlet obstruction. ATP's tests have shown that these turbos, when used with the stock sized 2.4" inlet, produce significantly less power than when used with the 3" inlet. When coupled with a 3" downpipe, the 3" inlet promotes faster spool, and higher power numbers with less pressure at the manifold.

1 Year Manufacturer Warranty

Exhaust Housing Size:
N/A
Compressor Inlet Size:
3"
Rated Horsepower:
400hp
Bearing Type:
Dual Ball Bearing
Scroll:
Single
Fitment:
Stock Location
Oil Line Included:
Yes
Water Line Included:
N/A
Gaskets Included:
No
Wastegate:
Internal
Tuning Required:
Yes
Installation Hardware Included:
Yes
Qualifies for Free Shipping:
Yes
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