Perrin Uppipe WRX (2002-2014) STI (2004-2018) Audi so there is no cutting

so there is no cutting of the stock structural components required

V-band clamps are designed to hold hundreds of pounds of pressure and do so without the need for a gasket

The plates are secured to the body by aerospace fasteners or stainless steel rivets

During power on

Perrin Uppipe WRX (2002-2014) STI (2004-2018) Audi so there is no cuttingConstructed from TIG welded T 321 stainless steel with 1 2" thick flanges, the Perrin uppipe for the Subaru WRX STI Legacy GT is designed to handle the extreme heat of your Subaru's turbocharged engine without warping or cracking. Bolt this product up to your turbo and you will experience quicker spool, more power and snappier low end throttle response. The Perrin uppipe includes detailed instructions and new studs to make installation of this part as