Porsche 718 GT4 / Spyder / GTS 4.0L SOUL Street Headers Alfa Romeo 4C This extreme pressure increases the

This extreme pressure increases the strength of the aluminum by eliminating porosity and improving the grain structure

Free-flowing pipes replace the factory mid-pipes and resonators to improve exhaust flow

5” polished tips

8 mil thickness + Ceramic Top Coated Film

Porsche 718 GT4 / Spyder / GTS 4.0L SOUL Street Headers Alfa Romeo 4C This extreme pressure increases theDEVELOPMENT AND TESTING: The factory headers were designed to be easy and cheap to manufacture while also conforming to the performance killing emissions standards of the market. The stock headers use cheap pressed flanges, squashed primary tubing, subpar collectors and dense catalytic converters all robbing your high performance Porsche of the sound and performance it deserves. By smoothing the interface between the flange primary tubes, using smooth