Akrapovic Turbo Down Pipes With Cats - BMW 2 Series G87 M2Developed to be used in conjunction with the Akrapovi Slip On Line (Titanium) and the Evolution Link Pipe Set (Titanium SS), this high quality stainless steel downpipe set features a pair of sporty catalytic converters (200 cpsi) with heat insulation. The front part of the downpipes is cast in the in house foundry, providing a perfect fit. Delivering a pure racing sound full of emotion, this provides great feedback at high revs, without drone.