AMS Performance Big Bore Billet Throttle Bodies – 2008+ Nissan GT-R (R35)



Maximum Airflow For Your Hungry VR38 Engine

At around 800HP, your stock throttle bodies become a restriction to the intake system.  The negative effects of this bottleneck are exacerbated exponentially as power increases from there on.  By enlarging the diameter of the throttle bodies from the stock 60mm (ID) to a massive 73.5mm (ID), we increased the cross sectional area by 50%.  This provides much improved power gains – especially over the 1000HP mark.

gtr throttle body upgrade mods kit

The Largest VR38 Throttle Bodies On The Market

Since we are a true performance automotive manufacturing company, we employ a team of highly qualified engineers – not some idea based on a whim. Our engineering team was given the task of designing the largest, best-performing throttle bodies on the market to feed our Alpha Performance R35 GT-R Carbon Fiber Intake Manifold and they delivered!  Each CNC billet 6061-T6 aluminum housing was specifically designed to provide enough air flow to support up to 2000+HP without issue – implementing enlarged diameter 73.5mm ID bores along with low profile throttle body shafts to minimize restrictions even further.

R35 GTR throttle body upgrade mods kit
Standard Flange
R35 GTR throttle bodies mods upgrade kit
Vibrant 3″ HD Flange Configuration

Throttle Body Upgrade Made Easy

Alpha Big Bore Throttle Bodies use your existing Nissan OEM drive-by-wire electronics.  Simply swap out the internal components from your stock throttle bodies and you are ready to go. Learn more by reviewing our comprehensive installation instructions.



Uncork your GT-R’s potential, order your Alpha GT-R Big Bore Throttle Bodies Today!

Exclusive Benefits

  • 73.5mm throttle bodies – the largest on the market
  • 22.5% increase in diameter, 50% increase in cross sectional area
  • Increased mid-range and top end power
  • Does not adversely affect low-end power
  • Available with 3″ Vibrant HD Clamp or Standard Flanges
  • Online Installation Instructions


  • 2009+ Nissan R35 GT-R
  • Fits all USDM, JDM and European Models (LHD & RHD)

Product Notes

  • For proper driveablity these Alpha Big Bore Throttle Bodies are suggested for use with standalone engine management systems only.
  • Factory throttle body electronics required from existing stock throttle bodies.
  • Specify 3″ Vibrant HD Clamp Flange or Standard in the Drop Down Menu
  • Comprehensive Installation Instructions

Additional information

Weight2.31 kg
Dimensions32.00 × 21.33 × 20.82 cm

TB Set w/ Std Hose Flanges, TB Set w/ Vibrant HD Flanges


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Models suitable for this product

NissanGT-R2009 - 2010Base - 3.8L Twin Turbo
NissanGT-R2009 - 2020Premium - 3.8L Twin Turbo
NissanGT-R2012 - 2016Black Edition - 3.8L Twin Turbo
NissanGT-R2014 - 2015Track Edition - 3.8L Twin Turbo
NissanGT-R2015 - 2020NISMO - 3.8L Twin Turbo
NissanGT-R2017 - 2020Track Edition - 3.8L Twin Turbo
NissanGT-R2018Pure - 3.8L Twin Turbo
NissanGT-R202050th Anniversary Edition - 3.8L Twin Turbo

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