ISR Performance

ISR Performance RamHorn Top Mount Manifold MVS SCH40 - Nissan SR20DET S13/S14

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ISR Performance RamHorn Top Mount Manifold MVR SCH40 - Nissan SR20DET S13/S14

With Great Success of the ISR V3 SR20DET Manifold we have released a brand new High-quality SCH40 RamHorn Top Mount Manifold with 44mm MVR wastegate. The ISR RamHorn Manifold is an upgrade over almost all other bottom and top mount manifolds, Utilizing thicker Schedule 40 Weld-El Piping and allows room for A/C and powersteering.


  • T3 turbocharger flange
  • 44mm wastegate flange
  • S13 and S14 chassis
  • A/C and powersteering compatible
All ISR Performance products sold are warranted for a period of 1 year on "Hard Parts" and 6 months on "Moving Parts" from the original date of purchase. No warranty claim will be valid without authentic, dated proof of purchase. This Warranty does not cover parts or labor used in the installation and/or removal of any products. This warranty is to the original retail purchaser and none other and is available directly from ISR Performance and not through any point of distribution or purchase. If a defect is suspected, the retail purchaser must contact ISIS Performance directly to discuss the problem, possible solutions and obtain a Return Merchandise Authorization (RMA), if deemed necessary by the company. All returns must be shipped freight pre-paid to the company and with valid RMA before they will be processed. ISR Performance will examine any product returned with proper authorization to determine if the failure resulted from a defect or from abuse, improper installation, misapplication or alteration. ISR Performance will then, at its sole discretion return, repair or replace the product.

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