• The CTS Turbo MK7/7.5 Golf R 3" turbo-back exhaust system is hand tig welded using the finest T304 stainless steel. Our exhaust system was designed for both street use and big turbo abuse. Other MK7 Golf R exhausts that are currently available can choke peak power and limit the breathing due to their 2.5" construction.  The 3" design of the CTS Turbo MK7/7.5 Golf R turbo-back is ideal those of us chasing serious horsepower. Product Details: - Fits MK7/7.5 Golf R only - True 3" Stainless steel cat-back exhaust - Aggressive sound under hard driving, but subtle when cruising - Water jet cut flanges - CNC mandrel bent stainless steel piping - Double wall 4.0" tips with CTS logo Stage 2 software is required to avoid check engine light.