The ISR Ram Horn manifold is constructed using our heavy-duty SCH10 weld elbows and is designed to allow the end user to retain P/S and A/C. We have test-fitted up to 35-series turbos on this manifold with no fitment issues. A manifold-to-head gasket is not included; we recommend using our multi-layer gasket (Part Number IS-EMG-KA247).
Combine with other components to complete your bolt-on top mount kit:
Turbocharger (IS-RSX3076R or IS-RSX3576R), O2 Housing (IS-O2-KATM), Downpipe (IS-SSDP-NKAT)
- T3 turbocharger flange
- MVS/38mm V-band wastegate flange
- S13 and S14 chassis
- Compatible with A/C and power steering
Legal only for use in competition vehicles which are not registered and may never be used on public roads or highways. May also be used on other exempted 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 there will be no additional charges beyond the total amount paid at checkout.
〇Confirmation of Compatibility
Our entire product database is based on North American vehicles (USDM). Please confirm compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether 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 products are sorted by selecting the year, manufacturer, and vehicle model via the tabs on our top page, this does not necessarily mean they will fit Japanese model vehicles 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 calculated automatically when 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.
Basically, all products are shipped internationally from our U.S. warehouse. Unlike domestic Japanese shipping, international shipping takes approximately 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all products are transported by air. They are never shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
The products we handle are basically all designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection (Shaken) system," and we are unable to provide strength analysis reports or similar documentation for Japanese inspection purposes. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. As all products are shipped internationally from outside Japan, there may be shipping damage to the packaging or the product itself. Please understand that for products with shipping damage, defective products, or products different from what was ordered, we will only handle returns, refunds, or exchanges if contacted within 7 days of receipt. Furthermore, for products sold through us, warranty-related support will be handled "exclusively through us." Please note that we do not provide support through other companies or distributors located within Japan.