2007 BMW K1200S exhaust

Sound clip of an eBay Akropovic knockoff on my bike, with the dB killer removed. Cost was $70 including shipping, plus $5 at a muffler shop for them to spread the inlet so it would slip over the mid-pipe (54mm?). Reused the spring from the full-size Leo Vince cf muffler it replaced, had to stretch it a little more to fit this short muffler. Just wanted a different look and sound for now...