The BCS Valveless system is our acoustically tuned, dual tone Cat back system for the Golf R Mk7.5 GPF 2.0 TSi, providing you with the maximum possible full-time audible thrill from your Golf. The system has a greater audible volume than the stock exhaust offering, however, with careful design and development we have created a system that ensures that any unwanted in-car frequencies are removed, leaving you with a perfect drone-free experience, together with our characterful pop and burble, free-revving sound. 

The BCS GPF Back system was developed to amplify and enhance the tone of the very muted and underwhelming stock exhaust, Built to offer a solution to those wanting to bring life back into their GPF Model vehicles without removing the GPF Downpipe itself. Following comprehensive research and development we created a valveless dual tone system that not only offers a sportier note over the stock exhaust when accelerating and under high load but also retains the subtlety when cruising and driving sedately, ultimately offering complete sound control through the type of driving but also being further enhanced by mode choice as well. 

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