This Wilwood adapter rotor/hat register ring measures 2.72 inches in diameter and is sold as a two-pack for matching rotor and hat register surfaces. The rings create a dedicated seating diameter to align rotors with hats when a 2.72-inch register fit is required, helping maintain consistent rotor centering during assembly. They are intended for brake applications calling for this specific register size.
Wilwood Adapter Rotor/Hat Register Ring 2.72in Dia. - 2 Pack