wouldn't read to much in to the appearance of the back pipe more than likely a prototype or modded exhaust production exhausts from companys like bosal etc are really mass produced and I should know I worked as a welder for a short time on them as a stop gap in the early 80,s couple of months production welding and making them. I have know doubt and wish the company all the success in there bike especially in these difficult times which know doubt judging by the bikes performance so far they will achieve it and believe me it will come with the min number of welded seams on the final production model .