Purchased in 2016, installed on my bike and tested it, then ended up leaving the country for a year. Now I'm selling the bike and taking parts off of it. Never actually ran it on the track/road, started the bike a few time in the garage and putted around the neighborhood to check fitment, etc. The carbon fiber attachment that secures the silencer to the bike has a small chip out of it from my ham-fisted attempt at install, but cannot be seen once installed, nor does it affect functionality (Part # 5490021). Arrow part 71156CKR that is not offered to the general public; it was made for a race team (H35 team of MotoAmerica racer Benny Solis). It's similar to the 71075CKR full Ti system (non-ABS bikes) but the headers have a slightly different design. For a full on race bike, this system makes a little more power. Per Arrow "71156CKR was made with the basis of 71075CKR system, with some modifications to the 4:2 manifolds, taken from 71062CPR (a version made for CBR600RR 2008 for SuperSport races). The system was produced in a very limited series: modifications with respect to 71075CKR were necessary (this is a bit uncertain) to make room for a bigger oil pan. Moreover, the silencer was fitted with a dB-killer". Located near Philadelphia, PA. Retail is $3202. Asking $1,700 OBO. PM me for additional pics, details, questions.