Tomioka Racing

Tomioka Racing Single Scroll Equal Length Exhaust Manifold with 3 Bolt Up-pipe

2015-2021 Subaru STI

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Tomioka Racing Subaru Single Scroll Equal Length Exhaust Manifold with 3 Bolts Up-pipe for EJ20/EJ25
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Tomioka Racing Subaru Equal Length Exhaust Manifold 2002-2014 Subaru WRX 2004+ Subaru STI


  • Stainless steel construction
  • Lost wax finish
  • TIG-welded and machine-bended pipes
  • 3-bolt flange up pipe
  • Includes new turbo gaskets
  • Includes 50' x 2" exhaust wrap
  • Includes hardware
  • Equal-length layout
  • Produces an aggressive 4-cylinder sound
  • Allows for an unobstructed flow path for the exhaust gases to escape
  • Increases horsepower and torque
  • Reduces the turbo lag



This is the Tomioka Racing Equal Lenght Exhaust Manifold. This is a great way to add more horsepower and torque while increasing the turbo response in the EJ. This is an equal-length exhaust manifold that has been designed with smooth bends that allow for an unobstructed exit path of the exhaust gases going to the turbocharger. 

Additionally, the factory exhaust manifold is very heavy by design, so you are saving a good amount of weight as well. This exhaust manifold will also come provided with an up-pipe which is an upgrade by itself as the factory up-pipe will become a bottleneck in your performance in older models. 

Exhaust wrap, gaskets, and new hardware will be included to make this manifold ready for the installation. 

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