you guys that make custom exhaust systems How do you bend the Pipe?

 

with a mandrel bender. usually they are hydraulically actuated. well the good ones are.

 

yeah they are expensive. I own a hydro mandrel bender and its cool to haver but only worth it if you do a lot of work that will help you pay it off. If you just wanna custom exhaust put together go to a good muffler shop that knows how to do it properly.