Introducing the new ISR Billet Intake Manifold, Fuel Rail, and Throttle Body Kit for the RB25DET.
This intake manifold significantly increases mid-range and top-end power, especially when equipped with upgraded turbos and camshafts. Each intake runner features velocity stacks for optimal airflow. This combo kit includes a billet gold anodized top-feed fuel rail with 8AN inlet and outlet, as well as a billet 90mm throttle body. The intake has a provision for the OEM IAC and includes an IAC delete plate, making it suitable for both street and track use. With fully TIG-welded runners and a highly polished finish, the ISR intake manifold will visually enhance any engine bay.
When installing this manifold on an RHD chassis, depending on the specific chassis, sub-model, and original clutch master cylinder used, you may need to swap to a different OEM clutch master cylinder to provide enough clearance for the plenum.
Includes
Billet intake manifold
14mm top-feed fuel rail for 48mm and 60mm injectors
90mm billet throttle body
IACV delete plate
Hardware
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Legal only for use on competition vehicles which are not registered and may not be used on public roads or highways. May also be used on other exempt vehicles.
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 you will not be charged any additional fees beyond the total amount paid at checkout.
〇Checking Compatibility
Our product database is based primarily on North American vehicles (USDM). Please confirm whether or not these products can be installed on Japanese vehicles (JDM) before placing your order. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will investigate for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our top page, this does not necessarily mean they will fit Japanese models without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of checkout. Shipping estimates are automatically calculated once you enter your shipping address on the checkout page. For large items such as body parts, there may occasionally be a significant discrepancy between the automatically calculated shipping cost and the actual cost. 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 about 7 to 14 days, so please allow plenty of time when ordering. If you are in a hurry, please contact us to check the delivery time in advance. Please note that all products are transported by air; they are never shipped by sea freight.
○ Regarding Compliance with Japanese Vehicle Inspection (Shaken)
The products we handle are basically all designed and manufactured outside of Japan. Please be aware that they are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide strength calculation documents or similar paperwork for these systems. Therefore, all parts are sold for use on "circuits, private land, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents of your order as soon as it arrives. As all products are shipped internationally from outside Japan, there may be delivery damage to the packaging box or the product itself. Please understand that we will only provide returns, refunds, or replacement exchanges for items with delivery damage, defects, or incorrect items if notified within 7 days of receipt. Additionally, regarding products sold through our company, warranty support will be provided "only through us." Please note that we do not handle support through other companies or distributors located within Japan.