Tomei Expreme Unequal Length Exhaust Manifold Subaru 2002-2014 WRX / 2004+ STI

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SKU TB6010-SB02A

Tomei introduced the high efficiency 4-1 as against the STD 4-2-1. The exhaust efficiency of the standard exhaust manifold is not perfect, but Tomei 4-1 type exhaust manifold has high efficiency. You could see the change of dramatically driving feeling.

The complete equal length is good for the exhaust intervention but reduce the turbine performance and increase the exhaust resistance. Contrary to that, the not-equal length exhaust manifold can lead the efficiency of other cylinders. Tomei design the not-equal length.

These exhaust manifolds make for an excellent upgrade because they save weight, and are designed with less restriction to improve the power and performance. This manifold is perfect for those of you on the quest to make more horsepower, more torque, and to really get that flagship flat-four sound.


  • High-efficiency 4-1 type
  • Not equal-length design
  • Great expansion of bore size of support pipe
  • Dry racing sound
  • Lightweight and rust-proof
  • SUS 304 stainless steel materials
  • Comes with new gaskets, hardware, exhaust wrap, and stainless steel zip ties take this manifold ready for the installation 


  • 2015+ Subaru Impreza WRX STI
  • 2006-2014 Subaru Impreza WRX
  • 2005-2012 Subaru Legacy GT
  • 2005-2009 Subaru Outback XT
  • 2004-2013 Subaru Forester XT
  • 2006 Saab 9-2X Aero

Always verify compatibility before purchase.

Unfortunately, this product is temporarily out of stock, however should become available soon. You can still place your order and be put in a queue; the item will be shipped ASAP. Please contact our customer service team with questions or to check availability.

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to