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AMS Performance Turbo Kit - 900X SUBARU

Brand: AMS Performance | Category: Turbo Kits

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More Information Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
Click For More Info 2004 - 2007 IMPREZA WRX STI
H4 2.5 T EJ257 ALL
Click For More Info 2006 - 2007 IMPREZA WRX
H4 2.5 T EJ255 ALL
Click For More Info 2008 - 2014 IMPREZA WRX STI
H4 2.5 T EJ257 ALL
Click For More Info 2008 - 2014 IMPREZA WRX
H4 2.5 T EJ255 ALL

Product Description

The AMS 02-07 Subaru Rotated Mount V-band Turbo Kit is the new benchmark in Subaru performance. Designed to meet the demanding needs of road race, drag race and street cars alike, we have successfully achieved unparalleled drivability, response, and horsepower. Our unique design has been tested and refined for over 1 year to provide reliability, OEM like fitment and options never available in a Subaru turbo kit before.

The AMS kit brings some new ideas to the table…

  • V-band housings

Each AMS Subaru Turbo Kit incorporates the latest V-band exhaust housing. The Precision Turbo V-band housings not only provide the most horsepower and save weight but they eliminate the need for gaskets and are easier to install. No more annoying exhaust leaks and no gaskets to replace!

  • Cast Stainless Steel V-band Up-pipe

Implementing CAD and Casting designs we are able to produce not only an extremely strong and reliable piece but one that is not limited to the restrictions of a hand fabricated up pipe. Smooth transitions, optimal pipe diameter and solid construction make the up-pipe another key component to the AMS Subaru Rotated Mount Turbo Kit.

The new AMS 900x is the same turbo that powered us to our 2009 Redline Time Attack Championship win. Utilizing the latest in billet compressor wheel technology and a newer, more efficient turbine the AMS 900x provides enormous power with the best possible spool up characteristics making the popular GT35R obsolete!

The AMS 900x can make an additional 150 horsepower with only a 150-250 rpm difference in spool time over the GT35R. This versatile turbo is great for street, track or drag cars and is capable of up to 900 horsepower making it the best choice for an all around powerhouse!

Each AMS Subaru Rotated Mount V-band Turbo Kit is hand built here at AMS with a meticulous attention to detail. We know what it’s like to install a turbo kit so we provide all the necessary hardware and detailed instructions for a hassle-free installation.

With power output ranging from 350 – 950 horsepower our turbo kits have just about every Subaru owner covered. On just our plain old GT30R kit with a top mount intercooler, fuel and exhaust upgrades we were able to put down 485 whp and over 500 ft. lbs. of torque! This same simple combination netted an 11.3 quarter mile time in a full weight 2007 STI on stock tires!!! Just imagine what an AMS 900x can do!


  • 2” ID rotated V-band cast stainless steel up-pipe for optimum flow and durability
  • 5/8” thick flange on up-pipe to ensure a proper seal
  • Turbo support bracket maintains turbo kit reliability under any condition
  • 304 stainless steel TIG welded construction
  • Lifetime Limited Warranty on the up-pipe*
  • AMS spec Precision Turbo GT series turbo with ported shroud compressor covers to prevent compressor surge
  • Precision Turbo Stainless Steel V-band exhaust housing with choice of .63, .82 a/r ratios
  • Your choice of a genuine Tial 44mm or 38mm V-band wastegate to ensure proper boost control
  • Wastegate feed strategically placed on the Up-pipe for precise boost control
  • 10” stainless steel external wastegate dump tube
  • No gaskets needed for the turbo to up-pipe, up-pipe to wastegate or turbo to downpipe
  • Bolts up to any stock or aftermarket header that fits the factory up-pipe
  • Downpipe fits AMS & most other aftermarket cat-back exhausts
  • Kit Utilizes 4 ply silicone tested up to 50 psi of boost!
  • New coolant lines for your coolant expansion tank for a clean engine bay
  • DEI heat insulation to protect OEM wiring from excessive heat
  • Kit includes ALL necessary fittings and hardware for installation
  • Class 10.9 fasteners & 4 ply silicon couplers. We use the best hardware and silicone so that it goes together right the first time

Kit Includes

  • Cast stainless steel Up-pipe
  • AMS spec Precision Turbo GT series dual ball bearing turbo with ported compressor cover and Precision V-band turbine housing
  • Genuine Tial 44mm or 38mm V-band wastegate
  • Integrated turbo support bracket
  • AMS high-flow off-road test-pipe (high-flow steel core catalytic converter optional)
  • DEI Heat insulation for your electrical wiring
  • New lines for your coolant expansion tank
  • Stainless steel 3” downpipe with integrated Stainless steel flex section
  • Stainless steel oil feed line (fittings for both WRX and STI included)
  • AMS oil return line
  • 4 ply silicone 2.5”” turbo outlet pipe, intercooler and intake couplers
  • Top quality hardware package including nuts, bolts, fittings and clamps
  • Detailed installation guide
  • .63 a/r exhaust housing

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