Custom Exhaust? I'll Show You a Custom Exhaust!
 

https://cimg2.ibsrv.net/gimg/atvconn...55cb60e3f1.jpg

Usually exhaust systems cost quite a bit and come blinged out with exotic materials. This guy says the same can be accomplished for much much less:

https://atvconnection.com/articles/v...ust-like-this/