The Wilwood adapter rotor/hat register ring with a 2.83-inch diameter is offered as a two-pack to match rotor and hat registration interfaces. When a 2.83-inch seating diameter is specified, these rings help align and center the rotor on the hat for correct mounting and consistent rotor runout in compatible brake assemblies. They provide a straightforward dimensional adapter for that specific register size.

Wilwood Adapter Rotor/Hat Register Ring 2.83in Dia. - 2 Pack