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ISR Performance Turbo Kit - Mazda Miata NB 1.8 - No Turbocharger Included

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ISR Performance Turbo Kit - 1999-2005 MAZDA MIATA NB 1.8 - No Turbocharger included

ISR Performance is proud to introduce its newest turbocharger kit for the Mazda Miata NB 1.8 engine. This is one of the most complete kits while keeping an affordable price tag. This however does not mean that quality was sacrificed. Designed for compact T25 T28 GT style turbochargers this kit utilizes a full tubular scheduled 40 turbo manifold to prevent cracking and 304 stainless steel exhaust components, a chassis specific intercooler complete with mounting bracket for a rigid installation, along with fully polished aluminum intercooler piping. Also included are AN oil feed and water lines and AN turbo drain line with aluminum weld bung for the factory oil pan.

This kit was designed with aftermarket ecu's in mind and for use with a map sensor.  This kit DOES NOT include a turbocharger. A more complete kit with turbo Part # IS-NB18TurboKit-T28 is available. This kit will require a bolt on cover gt style T28 turbocharger for a complete installation. Other T25 turbochargers such as Garrett 2871 can be used with this kit with simple modifications.

This kit includes a modular hotpipe that works with ISR HKS, GREDDY and TIAL flanges. (sold separately).

a 2.5" hole will need to be drilled for intercooler routing.

Kit Includes: 

  • Schd 40 Bottom Mount Turbo Manifold
  • Intercooler and piping kit
  • Turbine O2 Housing & Downpipe
  • Full oil and water Turbo lines with 10an aluminum weld bung for oil pan
  • AFM Delete intake with Air filter

This is the most affordable and complete turbo kit available


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Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways; and also for use in other exempted vehicles.

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