Here is a sample of some of the aftermarket exhausts you can install on your Toyota 86 or Subaru BRZ. Different exhausts will suit different people that prefer something that is really loud, or people that would rather something more subtle.
This Toyota 86 is fitted with a Works Axleback-M with a Tomei UEL Header and overpipe.
This Toyota 86 is fitted with Tomei Expreme UEL Headers, Tomei Expreme Overpipe, Invidia Catless Frontpipe and an Invidia N1 Exhaust.
This Scion FR-S is fitted with a Borla UEL
This Scion FR-S is fitted with a Perrin 2.5″ Cat Back system
This Subaru BRZ is fitted with an OpenFlash Header V1 and a Stromung Axleback exhaust