Includes P-HF1284 Sound Kit. Evolution Line (Titanium) Performance Gains (+ Evolution Link Pipe set): Power +4.6 kW at 6200 rpm Torque +5.9 Nm at 3500 rpm Weight -12.2 kg This beautifully formed exhaust has sound and performance running right through it. Constructed entirely from low-weight, high-grade titanium, it features a central muffler flanked by two valves (the housings of both valves are cast at the in-house Akrapovic foundry) and a link pipe set with an X-connection element. With unique sound patterns designed to offer maximum enjoyment, the X-connection in the link pipe section gives the exhaust system a characteristic Akrapovic high-frequency racing tone in the upper rev range, which is complemented by the deep and iconic Akrapovic rumble from low down in the rev range, providing a distinctive V8 growl. There also is a comfort mode, with no unwanted noise or drone in the cabin. Finished with eye-catching carbon-fibre / titanium tailpipes exiting on either side of the rear of the car, the exhaust also increases power by 6.9 kW at 5,600 rpm and adds 17.2 Nm of torque at 2.500 rpm when tested on Akrapovic's in-house dyno in back-to-back runs with RS Q8 against the stock RS Sport exhaust system. It is a plug-and-play product, and due to its ECE type approval there is no need to tune the ECU. An optional Akrapovic Sound Kit and Downpipe / Link pipe set (SS) is available to upgrade the Evolution Line (Titanium) exhaust.