Alpha 20x R35 GTR Turbo Kit


With 20 years of documented research and development in the forced induction field, AMS Performance has proven itself as the powerhouse in the automotive aftermarket. Our award winning performance systems are what all others are measured by. Be the Alpha.

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SKU: ALP.07.14.0116-1 Categories: ,


Updated for 2020, the Alpha 20x kit comes STANDARD with 3.5″ Downpipes, 4″ Aluminum Intake tubing, and 4″ Turbo inlets which allow the Alpha 20x Turbo Kit to be capable of over 2000 WHP! The competition can’t compete with Alpha on the street or on the track. All of the things that are standard on our kits costs you thousands extra with the competition. The Alpha turbo system upgrades for the R35 Nissan GTR have been engineered from the ground up to create a line of turbo kits that would redefine GTR aftermarket performance. Are you ready for a 2000 WHP street car?

  • Totally Redesigned Turbo Kits for Maximum Horsepower
  • Capable of Deep 7 Second Quarter Mile Times
  • Totally Redesigned More Efficient Exhaust Manifolds
  • Laser Cut Heat Shields and Line Sheaths for Superior Heat Management
  • Parts Included that Competitors Charge Extra For
  • Massive 4″ Aluminum Intakes from Compressor Covers to Filters
  • Show Stopping Design and Materials
  • No Need to Hack Up Your Chassis Frame Rails

*HP numbers based on optimal conditions and proper supporting modifications

Max effort Alpha 20x build with 4.3L engine built to race spec, tuned on methanol fuel

Alpha R35 GTR “X Series” Turbo Systems

Every part of the new Alpha 20x kit is now improved. From the exhaust manifolds, to the intakes, to the 20x spec turbos, to the downpipes, the kit was designed to spool faster, pull more air in, and get more air out making much more horsepower than the previous generation of turbo systems.Our SnailWorks© Engineering Team has spent hundreds of R&D hours refining the Alpha “X Series” turbo systems to be the best performing, highest quality, and easiest to install kit on the market.


alpha R35 GTR turbo kit upgrade kit

Drivewire’s Alpha 20x Engine Bay

Our Totally Redesigned Tubular Exhaust Manifold

The new 20x kits feature 2.0 inch external diameter runners which yield a 1.7 inch internal diameter for our new turbo kits. They are not just larger but designed in a way to feed the exhaust gasses as efficiently as possible to the new “X” branded kit turbos. To improve the exhaust flow even further each of the manifolds have been through an extrude honing process, resulting in a smooth finish in the entirety of the manifold interior.

r35 gtr turbo kit mods upgrade

New Alpha 20x Turbochargers

New for 2020, we spec’d a turbo with a 68mm billet compressor wheel, a turbine housing that features v-band inlet and outlet, and a 4″ surge ported compressor inlet.The new 20x kit is 2000+ whp capable! All this is accomplished without sacrificing anything in terms of spool up time or power delivery. The future is now! The new Alpha 20x turbochargers do not just make more power but do so with no loss in spool. We have successfully delivered you more horsepower throughout the entire powerband! These turbos also are able to sustain higher boost levels, to further improve power output and reliability.

Massive 4″ Aluminum Intakes

That large 4 inch compressor inlet on the turbo needs some more air to feed it. Anyone that has worked on a GT-R knows how tight it is trying to get 4 inch piping to a 4 inch compressor cover on a GT-R. Thankfully here at AMS we have the best resources available. By thoroughly laser scanning the confinements of the engine bay and designing the intakes in Solidworks© CAD (computer aided design) software, our Engineers were able to develop aluminum intake pipes to utilize all of the space available. It has a full 4″ cross sectional area throughout the entire pipe to deliver all the necessary air to the Alpha 20x turbos.

Tig Welded 3.5″ Stainless Steel Downpipes

As another feature of our 22x Turbo Kits we have added 3.5 inch (90mm) T304 stainless steel downpipe set that will perfectly match to your existing street exhaust system. However, our Snailworks© AMS Engineering Team designed this full 3.5″ downpipe to only taper down at the exhaust flange which allows for easy custom fabrication of 3.5″ turn downs or merged as a 5″ racing exhaust, or even adapted to an off-the-shelf 102mm street exhaust. The included TiAL 38mm external wastegates dump exhaust gasses through 1.5″ atmospheric dump tubes.

r35 gtr turbo kit mods upgrade

Alpha 20x Turbo Kit Downpipes

r35 gtr turbo kit mods upgrade

External Wastegate Dump Tubes


NO CUTTING of the Frame Rails, Compatible with A/C and Power Steering

We developed the new Alpha 20x Turbo Kit to directly bolt in without hacking up your prized possession! Typically when you reach 1200+ HP levels, drastic measures must be taken such as on our competitors kits where they start cutting frame rails, losing air conditioning etc. If you have to cut the frame rails on any street driven build with turbos in the stock location then its time to bring your car to AMS Performance. Optional modified A/C compressor and line assemblies are available directly from AMS, and are necessary to be compatible with the Alpha 20x kit.


r35 gtr turbo kit mods upgrade

Alpha 20x build with 4.0L engine built to street spec, tuned on VP Import/ethanol mix

Kit Includes


  • Alpha 20x Spec Turbochargers
  • Alpha CNC Billet Aluminum Engine Mounts
  • Alpha CNC Billet Aluminum Differential Bracket
  • Alpha Cast Exhaust Manifolds w/ 2″ Primaries
  • Alpha Tig Welded 3.5″ T304 Stainless Steel Downpipes
  • Alpha External Wastegate Dump Tubes
  • TiAL 38mm Wastegates
  • Alpha 2.5” to 3” lower IC piping
  • Alpha 4″ Aluminum Intakes
  • Alpha Dry Media Air Filters
  • Alpha Laser Cut Heat Shields
  • Alpha Ancillary Components, Including all Hardware, Lines, Couplers, and Heat Shielding
  • Comprehensive Installation Instructions



  • 2009-2011 (CBA) Nissan R35 GT-R
  • 2012-2016 (DBA) Nissan R35 GT-R
  • 2017-2019 (Facelift DBA / “EBA”) Nissan R35 GT-R
  • 2020-Current (4BA) Nissan R35 GT-R
  • Fits Left Hand Drive Models Only

Additional information

Weight 80 lbs
Dimensions 39 × 19 × 12 in


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The goal of AMS is to provide the highest quality, best performing products available.
By utilizing research and development and rigorous testing programs AMS will never compromise the quality or performance of our products.



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This policy only applies to installers and/or users who are in the United States, customers who reside in other countries should act in accordance with their local laws and regulations.

Some AMS Performance upgrades may solely be used on vehicles in sanctioned competition which may never be used upon a public road or highway, unless permitted by specific regulatory exemptions (such as a CARB E.O.). For state specific details please visit the following website:

It is the responsibility of the installer and/or user of the product to ensure that it is used in compliance with all applicable laws and regulations. If a product was purchased in error, do not install and/or use it. The purchaser must arrange to return the product(s) for a full refund.

All performance modifications and installations are at the customer’s own risk. AMS Performance holds no responsibility either implied or otherwise for mechanical, electrical or other failure when using any aftermarket performance products.

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