At what power level should I upgrade to the AMS Performance Nissan GT-R throttle body?

The stock 60mm GT-R throttle bodies become a measurable restriction at or above 800 horsepower. The AMS Performance Nissan GT-R throttle body set is recommended for builds approaching or exceeding this threshold, with the 73.5mm bore supporting power outputs well beyond 2,000 horsepower.

Does the AMS Performance Nissan GT-R throttle body require standalone engine management?

Yes. AMS recommends use with standalone engine management systems for proper drivability with the enlarged 73.5mm bore. The factory OEM drive-by-wire electronics from the stock throttle bodies are transferred into the new billet housings — no additional wiring or control modules are required.

What is the bore size increase of the AMS Performance Nissan GT-R throttle body?

The AMS Performance Nissan GT-R throttle body set enlarges the bore from the factory 60mm ID to 73.5mm ID — a 22.5% increase in diameter and a 50% increase in cross-sectional area. This is the largest throttle body bore available for the R35 GT-R.

Is the AMS Performance Nissan GT-R throttle body compatible with the AMS intake manifold?

Yes. The AMS Performance Nissan GT-R throttle body set is designed specifically to complement the AMS Alpha Carbon Fiber Intake Manifold, and is the recommended throttle body upgrade for all AMS Alpha intake manifold installations on builds exceeding 800 horsepower.

Does the AMS Performance Nissan GT-R throttle body affect low-end power?

No. The AMS Performance Nissan GT-R throttle body set delivers increased mid-range and top-end power without adversely affecting low-end power delivery. Low-profile throttle body shafts minimise restriction across the full RPM range.

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Description

AMS Performance Alpha Billet Big Bore Throttle Body Set with Vibrant HD Flanges for R35 Nissan GT-R

Nissan GT-R throttle body set from AMS Performance is the Alpha Big Bore unit — a pair of CNC-machined 6061-T6 billet aluminum throttle bodies for the R35 Nissan GT-R (CBA-R35, DBA-R35, EBA-R35, VR38DETT 3.8L V6 twin-turbo, 2008-2025), enlarging the bore from the factory 60mm ID to 73.5mm ID for a 22.5% increase in diameter and a 50% increase in cross-sectional area. The AMS Performance Nissan GT-R throttle body set supports power outputs exceeding 2,000 horsepower and is the largest throttle body available for the R35 GT-R, designed specifically to complement the AMS Alpha Carbon Fiber Intake Manifold on builds that have outgrown the stock 60mm throttle bodies at or above the 800 horsepower threshold. Vibrant HD flanges provide secure, leak-free connections under extreme boost conditions, and the installation uses the factory drive-by-wire electronics transferred from the stock units no wiring modifications required.

Why Upgrade to the AMS Performance Nissan GT-R Throttle Body?

The stock 60mm GT-R throttle bodies become a measurable restriction as power levels approach and exceed 800 horsepower. The AMS Performance Nissan GT-R throttle body set addresses this by enlarging the bore to 73.5mm ID a 50% increase in cross-sectional area that removes the intake flow bottleneck and allows the VR38 to breathe freely at power levels the factory units cannot support. Low-profile throttle body shafts further minimize restriction inside the bore, maximizing flow at both mid-range and top-end RPM without adversely affecting low-end power delivery. Each housing is precision CNC-machined from 6061-T6 billet aluminum for dimensional accuracy and long-term durability under the thermal and pressure cycles of high-boost forced induction. Installation is completed by swapping the internal electronics from the factory throttle bodies into the new housings, with no additional wiring and no standalone control modules. These Alpha Big Bore Throttle Bodies are recommended for use with standalone engine management systems for proper drivability.

Features

73.5mm ID bore the largest Nissan GT-R throttle body available
22.5% increase in diameter, 50% increase in cross-sectional area over stock 60mm
CNC-machined 6061-T6 billet aluminum construction
Low-profile throttle body shafts minimize bore restriction
Supports power outputs exceeding 2,000 horsepower
Increased mid-range and top-end power without adversely affecting low-end
Vibrant HD flanges for secure, leak-free connections under extreme boost
Uses factory OEM drive-by-wire electronics no wiring modifications required
Direct complement to the AMS Alpha Carbon Fiber Intake Manifold
Fits all USDM, JDM, and European R35 GT-R models (LHD and RHD)

Applications

Nissan GT-R: CBA-R35, DBA-R35, EBA-R35 | 2008-2025

Notes

Recommended for use with standalone engine management systems only required for proper drivability with the enlarged bore
Factory throttle body electronics from the existing stock units are required for installation transfer the internal components from the stock housings to the new billet housings.
Fits all USDM, JDM, and European R35 GT-R models LHD and RHD
Not available for emissions-controlled vehicles in California or for shipment to California addresses without a completed AMS Race Waiver form. International buyers should comply with local laws and regulations.

Frequently Asked Questions

At what power level should I upgrade to the AMS Performance Nissan GT-R throttle body? The stock 60mm GT-R throttle bodies become a measurable restriction at or above 800 horsepower. The AMS Performance Nissan GT-R throttle body set is recommended for builds approaching or exceeding this threshold, with the 73.5mm bore supporting power outputs well beyond 2,000 horsepower.
Does the AMS Performance Nissan GT-R throttle body require standalone engine management? Yes. AMS recommends use with standalone engine management systems for proper drivability with the enlarged 73.5mm bore. The factory OEM drive-by-wire electronics from the stock throttle bodies are transferred into the new billet housings no additional wiring or control modules are required.
What is the bore size increase of the AMS Performance Nissan GT-R throttle body? The AMS Performance Nissan GT-R throttle body set enlarges the bore from the factory 60mm ID to 73.5mm ID a 22.5% increase in diameter and a 50% increase in cross-sectional area. This is the largest throttle body bore available for the R35 GT-R.
Is the AMS Performance Nissan GT-R throttle body compatible with the AMS intake manifold? Yes. The AMS Performance Nissan GT-R throttle body set is designed specifically to complement the AMS Alpha Carbon Fiber Intake Manifold, and is the recommended throttle body upgrade for all AMS Alpha intake manifold installations on builds exceeding 800 horsepower.
Does the AMS Performance Nissan GT-R throttle body affect low-end power? No. The AMS Performance Nissan GT-R throttle body set delivers increased mid-range and top-end power without adversely affecting low-end power delivery. Low-profile throttle body shafts minimize restriction across the full RPM range.

About AMS Performance

AMS Performance is an engineering-led manufacturer of high-performance automotive components, founded on principles of integrity and dedicated to extracting maximum performance from turbocharged vehicles. With two decades at the forefront of the industry, AMS Performance combines computer-aided design, CFD analysis, and mechanical engineering expertise from motorsports backgrounds to deliver components proven at the highest level of performance. Their catalog spans turbo kits, intercoolers, intake manifolds, throttle bodies, cold air intakes, and complete turn-key packages for drag racing, road racing, and high-performance street applications.

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The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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