Tomei Unequal Length Exhaust Manifold | Subaru EJ20/25 (TB6010-SB02A)

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Exhaust Manifold Kit Expreme EJ Single Scroll WRX/STI Unequal Length with Titan Exhaust Bandage

Tomei introduced the high efficiency 4-1 as against the STD 4-2-1. The exhaust efficency of the standard exhaust manifold is not perfect. Tomei 4-1 type exhaust manifold has high efficency. 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 designed not-equal length to keep the boxer sound. The clear sound which got dry further by change to the diameter of the support pipe and the stainless steel quality of the material is pulled out and the good feeling could be obtained at the acceleration. Tomei designed the Lost Wax type strength flange. They are perticular about the welding and exhaust efficiency is improved very much. Tomei selected SUS304 stainless steel which is lightweight and rust-proof. They prepared bolts, gaskets, and easy and full instruction manual for privator.


  • High Efficiency 4-1 Type
  • Not-Equal Length Design
  • Great Expansion of Bore Size of Support Pipe
  • Dry Racing Sound
  • Ultra High Quality
  • Lightweight & Rust-Proof
  • Easy Installation


  • Subaru EJ205 / EJ207 / EJ255 / EJ257

What's In The Box?

  • Exhaust Manifold unit
  • Uppipe
  • 50mm x 15m Thermal Bandage
  • Bands
  • Gaskets
  • Bolts
  • Stickers


  • Manufacturer Standard Warranty

Customer Reviews

Based on 17 reviews
Tyler o

Great product! Gives my car that nice subu rumble.

Tomei unequal length exhaust

Amazing quality great sound excellent flow I feel like my car can finally breathe.

Devin Johnson

It fit sooo perfect no leaks or nothing. Came with everything i needed and more.

Maxwell R.
Deep rumble!

Deep rumble with my HKS exhaust. Can feel the difference as soon as it's on.

Just wow.

The headers are absolutely amazing! They come with some of the best heat wrap I’ve ever seen. They’re built with quality mind and it shows! Brings out such an amazing tone along with some pretty good power! I definitely recommend these headers!