I guess I need to do a dissertation on manufacturing...
There are two major differences between the Ducati Exhaust we make vs. the car exhast we also make. Our Hcomp exhaust is much more difficult to make than are car exhaust. Fortunately I have the current experience of manufacturing both. What seems like a couple of bends and welds is a lot more involved than cutting some tubes and welding them. Our midpipe takes a full day to complete one. The big issue we have is the fact we are hand coping and jigging across a seam weld on our midpipe, in other words we have to merge and cope three welded pipes and be less than .1" tolerance. To explain this you must see the midpipe up close. Not only that, it takes three hours to hand brush and finish each midpipe, that alone is an additional process you do not have to do on a car exhaust.
Silencers:
Yes we have them in all of our exhaust...Boom tubes have them too!
I hate to break the myth, but carbon fiber is pretty inexpensive. To make a carbon fiber tube requires less than 1 sq yard of fabric. On the consumer market the price is $50.00 per sq yard. We purchase carbon sheet at $35.00 per yard. Larrger companies buy for even less. The Rodan box cost me about the same in materials. Factor in the fact that all of our pieces are laser cut and CNC bent. That is not cheap by the way. Also what seems like a few pieces is much more, the Rodan box is made from 9 different pieces that must be jigged and welded together and packed. A carbon silencer is much less work. They are comprised of a stamped piece of metal tail cap, a carbon tube, perf tube, and front piece. Pretty easy to assemble as well. Our twin tube is also all hand made along with the silencers that fit within them.
Until you have actually been involved in manufacturing it is easy to throw around cost when you are on the outside.
Our sister business manufactures this stainless system out of schedule 40. It takes 1 day to complete this exhaust manifold and retails for $1095.
This exhaust takes 2 full days and retails for: $950
