The GiroDisc slotted rear ring for 2005–2009 Ford Mustang GT500, Boss 302, and GT (S197 with Brembo) is a replacement ring specified for those S197 rear brake assemblies equipped with Brembo calipers. It provides the slotted surface pattern listed for these Mustang variants. Verify your exact Mustang model and Brembo-equipped rear setup to ensure correct fitment.
GiroDisc 05-09 Ford Mustang GT500/Boss 302/GT (S197 w/Brembo) Slotted Rear Rings