Tomei Expreme SUS Exhaust Manifold Kit Unequal Length For EJ25 WRX STI Single Scroll

***NOTE: We don't ship this item to CA or any other CARB states, Please DO NOT purchase it if you are in one of those states (Contact us if you are not sure)***

Application: WRX STI EJ20/EJ25 Engine ***Single Scroll Turbo***

Specs:

Unequal Length Manifold / 4-1 Design
Material: SUS304 
Pipe Diameter: Main 42.7mm / Exit 60mm / Support Pipe Exit 60mm
Pipe Thickness: 2.5mm
Weight: 9.2 kg (Normal 13.3 kg)

Kit Contents:

Exhaust Manifold
Turbine Support Pipe
Gaskets
Blind Bolt
Titan Exhaust Bandage
Bandage Band
Installation Manual
Bolt Smooth Paste

1.High Efficiency 4-1 layout design - We introduced the high efficiency 4-1 as against the STD 4-2-1. The exhaust efficency of the standard exhaust manifold is not perfect. But Tomei 4-1 type exhaust manifold has high efficency. You could see the change of dramatically driving feeling.

2.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.

3.Great Expansion of Bore Size of Support Pipe - Tomei enlarged the bore size of support pipe 60mm from the STD one 42.7mm. This diameter of support pipe will show the great performance at the boost up or turbine replacement.

4.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.

5.Ultra-High Quality with Lost Wax type flange - We design the Lost Wax type strength flange. We are perticular about the welding and exhaust efficiency is improved very much.

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

We usually ship all orders within 1 day unless there is an issue with the order. In that case, we will contact you to find the best solution.