AMS Performance R35 GT-R Big Bore Billet Throttle Bodies

50% increase in cross sectional area to support 2000+ HP.




SKU ALP.07.08.0006-X Categories , Brand:

California Residents: Prop 65 Warning

Additional information

Weight 5 lbs
Dimensions 8 × 8 × 8 in

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

CARB And / Or EPA Compliance Testing Not Completed

While we believe this product is either CARB EO exemption applicable, or complies with the EPA's Anti-Tampering Policy, we have not completed the required testing and administrative process at this time. This product is not available to purchase for emissions-controlled vehicles located within the state of California, or available to ship to California addresses, without a completed AMS Race Waiver form. International users outside of the United States should act in accordance with their local laws and regulations.

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With 21 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.

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.



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


  • 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

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