Both Jetex 3" downpipes for the VW Golf Mk5 GTi and Mk6 GTi should be used in conjunction with the following Jetex cat-back systems:
These are all 3" pipe diameter as well, ensuring maximum gas flow, back pressure reduction and performance increase. This also means there is substantial capacity for high horsepower engine conversions, ECU re-maps and other engine mods.
Jetex also offer resonated or non-resonated cat-back systems. Non-resonated exhausts are denoted by TR at the end of the part number. For Golf Mk5 and Golf Mk6 exhausts, this means there is just one silencer at the back. The rest of the exhaust is 3" pipework from the stock catalyst or from the turbo if fitted to a Jetex 3" sports cat or de-cat pipe.