Tomei - Expreme UN Equal Length Exhaust Manifold/Headers (UEL) - Subaru

Tomei EXPREME exhaust manifolds which is now used throughout the world. Our EXPREME Manifolds have received numerous high appraisals on all aspects of efficiency, durability and performance gains. Now with this new addition to the EJ25 user family we now have a manifold specifically to optimize the EJ25 true power output potential.

High Efficiency 4-1 design:
We 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.

Not-Equal length Design:
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

Great Expansion of Bore Size of Support Pipe:
Tomei enlarged the bore size of support pipe f60 from the STD one f42.7. This diameter of support pipe will show the great performance at the boost up or turbine replacement.

Dry Racing Sound:
We design not-equal length same as STD that is remained 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.

Ultra High Quality:
We design the Lost Wax type strength flange. We are particular about the welding and exhaust efficiency is improved very much.

Lightweight and Rust Proof:
We select SUS304 stainless steel which is lightweight and rust-proof.

Easy Installation:
We prepared bolts, gaskets, and easy and full instruction manual. 

Type:                      UNequal Length, Single Scroll
Material:                 Stainless Steel SUS304
Manifold Spec:       O/D – 42.7mm, Thickness – 2.5mm
                               O/D – 45.0mm, Thickness – 2.5mm
Up Pipe Spec:        O/D – 60.5mm, Thickness – 2.5mm
Flange Thickness:  12mm

Contents of Kit:
• Exhaust manifold
• Up pipe
• Turbo gaskets
• Hardware kits
• Thermal Bandage 50mm Width x 15m
• Stickers x2
• Installation Manual

Compatible Models:

WRX (94-14)
STI (94-21)
Forester (97-13)
Liberty (04-09)