As a high-performance induction part, it has been crafted without compromise down to the smallest detail. If you are familiar with the Alpha series, you will already understand its overwhelming quality and performance.
Power-Focused Intake Manifold Exclusively for the VR38
Like our carbon plenum, this product does not simply improve power in the high RPM range; it delivers performance across the entire rev range.
While many aftermarket GT-R intakes only show gains at high RPMs at the expense of the low end, this product delivers increased horsepower and torque throughout the entire powerband.
It generates power and torque from the moment the turbos spool up, without sacrificing response or the torque curve in any way.
High-Capacity, High-Precision Cast Aluminum Plenum
Developed based on our championship-proven carbon plenum design. The GT-R features two plenums—one for each bank—each designed with optimal capacity and geometry.
To ensure an even distribution of pressurized air to the CNC-machined aluminum velocity stacks, the internal geometry is precision-molded and tapered to maximize air velocity while suppressing turbulence.
This improves air supply efficiency to the engine, resulting in further horsepower gains.
CNC-Machined Velocity Stacks
Features optimally designed CNC billet aluminum velocity stacks. Maximizes intake efficiency.
Meticulous Attention to Detail
The interface between the upper and lower sections is engineered with extreme precision to optimize airflow from the throttle body to the cylinder head.
Furthermore, by employing dowel pins, we have completely eliminated misalignment between the upper and lower ports, preventing turbulence caused by steps or protrusions. We have thoroughly eliminated the losses found in competing products.
Rigorous Durability Testing
To achieve high strength and reliability, we conducted testing in collaboration with specialized institutions.
We performed cycle testing from 0 to 50 psi in high-temperature environments, simulating over 20 years of use by a typical GT-R owner.
It has also cleared burst testing at over 150 psi; no other intake manifold has undergone such severe testing.
2000HP-Capable with Additional Fuel Rail Support
To support ultra-high-output specifications, an additional Alpha fuel rail can be installed, ensuring fuel delivery capacity for VR engines exceeding 2000hp.
Optimized injector angles improve atomization efficiency and combustion. It also supports future upgrades from a 2-rail to a 3-rail configuration.
Big Bore Throttle Compatibility
For vehicles over 800hp, the stock throttle body may become a restriction.
This product is designed for use in conjunction with Alpha big bore throttle bodies.
Anodized Color Options Available
Available in a wide range of colors including Clear (Silver), Black, Blue, Gold, Purple, and Red, enhancing the custom aesthetic of your engine bay.
Key Features
・Market-leading intake manifold for the VR38
・Design with overwhelming presence
・Over 25% lighter than competing products
・Precision alignment using dowel pins
・Equipped with dual MAP sensor ports
・Retains factory PCV functionality
・Equipped with additional vacuum ports
Contents
・Cast aluminum plenum
・Billet upper runners
・Billet lower runners
・Vacuum/boost fitting kit
・Adapter for factory throttle bodies
Options
・Various anodized colors
・Secondary fuel rail for 12 injectors
・Secondary fuel rail for 18 injectors
Compatibility
・2009+ Nissan R35 GT-R
(Compatible with USDM / JDM / European / Middle East specs; fits both LHD and RHD)
Notes
・Alpha big bore throttle bodies sold separately
・Custom piping required if retaining PCV
・Requires Alpha intercooler pipes or specific adapters
・We recommend installing with AMS fuel rails
・Custom anodizing requires an additional 2-4 weeks
・Factory gaskets required (sold separately):
14035-JF00A x2 (Lower side)
16175-ET80A x2 (Throttle side)
An intake manifold that maximizes the engine's potential and becomes the centerpiece of your engine bay.
Experience the true value of Alpha Performance.
Before Ordering
〇 Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
〇Checking Compatibility
All product databases are based on North American (USDM) vehicles; please verify compatibility with Japanese (JDM) vehicles before ordering. (If you are unsure if a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If an order is placed without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, manufacturer, and model on our top page, this does not guarantee direct bolt-on compatibility with Japanese models.
All products have been translated into Japanese using translation software. Due to potential confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of settlement. An estimate of shipping costs will be automatically calculated when you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the automatic calculation. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow ample time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all items are transported via air freight; they are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken)
Please note that all products we handle are designed and manufactured outside of Japan. They are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide strength calculation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for "circuit, private property, or off-road use only," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents of your order immediately upon arrival. Since all products are shipped internationally from outside Japan, packaging and products may occasionally sustain shipping damage. We will handle returns, refunds, or exchanges only if contacted within 7 days of receipt regarding shipping damage, defective products, or incorrect items received. Please understand that for products sold through us, warranty support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.