- Joined
- Mar 10, 2015
- Messages
- 533
- Location
- Georgia
I seriously doubt the temperatures/useage environment. I believe it's an engineering/manufacturing issue regarding welding metallurgy and welding technique, most likely at the supplier. If the welds are too brittle, they will crack and break. The welding science is fairly cut and dry but the application isn't. I've had a Harley aftermarket exhaust support break in half from the vibration within a hundred miles where another aftermarket (Vance & Hines) exhaust system held up just fine after thousands of miles and still going. So far, so good on the Duc exhausts although I've only put a few thousand miles on them in the track environment - much more consistent and easier than Shilling's. But these are still street bikes (barely but still...).