XForce VW Mk7 Golf R (2013-2017) 3″ Cat Back System with Varex Muffler
Give your VW Golf R MK7 the ultimate soundtrack with the XFORCE cat-back exhaust system, complete with VAREX valve control.
Constructed of 304-grade stainless steel, the XFORCE high-flow 3” bore system and race-style rear muffler helps reduce exhaust gas pressure for enhanced performance, whilst the integrated VAREX exhaust valve gives you control over your exhaust volume, all from the touch of a button! Not only do you get an exhaust system that lets you adjust how you your exhaust sounds, you also get enhanced looks too thanks to the brushed finish, precision TIG welds and a choice of 4” quad exhaust tailpipe trims.
Features
- 3″ Pipe work
- Brushed finish stainless steel pipe work
- Hot Dog resonator
- Polished Varex Race rear muffler
- Quad 4″ polished stainless tip outlet
What is the Smart Box?
Varex Smart Box is a control device with patent-pending technology that let the user to manually and automatically adjust the exhaust sound level of the Varex exhaust.The users can operate and make a change to the settings of the Smart Box via an elegantly designed Smartphone App.The connections between the Smart Boxes and the smartphones are via the latest Bluetooth® technology, which provides an exceptionally reliable and smooth user experience.Smart Box provides the following functions:
MANUAL MODE
- Precise manual adjustment of VAREX exhaust valve positions;
- Custom pre-set of VAREX exhaust valve positions;
MATRIX MODE
- Automatic control of VAREX exhaust valve positions based on real-time information of RPM, Throttle, and Speed. (ONLY FOR VEHICLES EQUIPPED WITH OBDII)

GEO MODE
- User can define a region on the map and then set a particular exhaust sound for location by dragging a circle on the smartphone screen. Multiple regions are allowed to be set and memorized.



