The Tomei Equal Length Exhaust Manifold was designed to get optimal performance gains for your 2004-2015 STI/2008-2014 WRX. These headers are an equal length, 4-2-1 designed to flow exhaust gases more efficiently through the power band.
Designed with quality at the highest priority, these manifolds are made using 2.5mm SUS304 stainless steel to give you a lifetime of performance. Additionally, the Tomei unit is much lighter than the OEM example, and the smooth bends in the manifold tubing will limit turbulence under acceleration which will help reduce turbo lag while adding more horsepower and more torque.
The header will come provided with hardware, gaskets, metal zip ties, up pipe, and heat wrap to make for a ready and complete installation.