Alpha Performance R35 Nissan GTR 90mm Downpipes


Alpha Performance 90mm 304 stainless steel downpipes with cast flanges and installation hardware


Alpha Performance  R35 Nissan GTR Cast 90mm Downpipe set


Why do I need downpipes?

When upgrading the performance on your GTR, one of the first and most essential purchases should be a set of downpipes.  The factory setup will become restrictive and create issues with increased boost.

Why buy Alpha downpipes?

Alpha Performance downpipes were designed to not only increase performance, but they were designed to LAST.  These downpipes feature 304 stainless steel cast castings on both ends.  Cheaper non cast versions are prone to cracking and failure.  Spend the money once, and buy the best!

What should I expect with Alpha downpipes?

As a basic FBO (full bolt on item), you’ll expect increased exhaust flow, with no restriction.  You’ll notice a deeper throatier exhaust note.  You’ll be ready to crank up the boost with additional mods!

What other modifications will I need?

You’ll absolutely want to purchase and install a custom tuning tool such as Cobb or EcuTek.  Your factory computer will require re calibration to run these safely and effectively.  Please contact us and/or check out our additional products and service

Benefits of Alpha Performance

  • Horsepower increase throughout the powerband
  • Improved turbo spool with less backpressure
  • Cast construction for added durability
  • 90mm (3.5″) primary section for optimal flow
  • Stock like (direct bolt on) fitment
  • Bolts up to stock and MOST aftermarket mid pipes
  • Precision tig welds for beautiful finish and durability
  • 304 Stainless steel

Included in this kit

  • Two 90mm Alpha downpipes
  • Downpipe bracket hardware
  • Downpipe to mid pipe gaskets


  • 304 stainless steel cast inlet and outlet
  • 304 stainless steel center pipe with .065″ wall thickness
  • 1.2″ thick stainless steel flanges


  • Fits 2009 and up Nissan GT-R
  • Fits all USDM, European, and JDM models


Installation is pretty straightforward and can typically be performed in 4 hours or less, given the proper tools and equipment.  If you happen to be purchasing one of our ATR upgraded bellhousings as well, there will be ZERO additional labor to install these at the same time (with the exception of swapping oxygen sensors to the new pipes).  Save time and money by upgrading exhaust components at the same time as bellhousing!


This product will be drop shipped, processing time may be up to 72 hours.  Please contact us ahead of time for rush orders, we will do our best to accommodate your specific needs!


EMISSIONS STATEMENT: Federal and many state laws prohibit the removal, modification or rendering inoperative any part that affects emissions on motor vehicles used on public streets or highways. Many Automotosports parts are designated for track use or off-road use only. Installation of certain components may bring the vehicle out of compliance with safety and/or emissions standards. Automotosports recommends that vehicles with parts designated in this fashion not be operated on public roads. Automotosports customers are responsible for complying with applicable state and local environmental regulations.

Additional information

Weight 20 lbs
Dimensions 20 × 12 × 12 in


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