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Air and Fuel› Superchargers, Turbochargers and Components

ISR Performance

ISR RamHorn Top-Mount Turbo Manifold

$770.00 $731.50 Save $38.50

SKU: IS-SSHT-NKAT

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Special Order
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ISR Performance RamHorn Manifold is a top-mount turbocharger manifold built with heavy-duty SCH10 weld-el's. The manifold features a T3 turbocharger flange and an MVS/38mm v-band wastegate flange.

This manifold is compatible with S13 and S14 chassis. It has been test-fit with up to a 35 series turbo without fitment issues. It is intended for use in competition vehicles only and is not street legal.
Show original supplier description
The ISR Performance RamHorn Manifold is a top-mount turbo manifold constructed from robust SCH10 weld-el's, engineered for Nissan KA24DE engines in S13 and S14 chassis. Designed for enhanced performance, this manifold features a T3 turbocharger flange and an MVS/38mm v-band wastegate flange, allowing for the installation of various turbos. A key design consideration is the retention of essential accessories, making it compatible with both power steering (P/S) and air conditioning (A/C) systems. ISR has confirmed fitment with turbos up to the 35 series without encountering issues. To complete a bolt-on top-mount kit, this manifold is recommended for use with other ISR Performance components such as their turbochargers (IS-RSX3076R or IS-RSX3576R), O2 housing (IS-O2-KATM), and downpipe (IS-SSDP-NKAT). Please note that the manifold to head gasket is not included; ISR suggests using their multi-layer gasket (part # IS-EMG-KA247). This product is legally intended for use only in competition vehicles that may never be registered, licensed, or used on public streets or highways, or for other exempted vehicles.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandISR Performance
Part NumberIS-SSHT-NKAT
CategoryAir and Fuel
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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