This Wilwood adapter rotor/hat register ring measures 2.33 inches in diameter and is sold as a two-pack to assist in matching rotor-to-hat register surfaces. The ring provides a consistent seating diameter for applications that require a 2.33-inch register, helping align rotors and hats for correct mounting. It’s a targeted hardware solution for brake setups needing this specific register size.

Wilwood Adapter Rotor/Hat Register Ring 2.33in Dia. - 2 Pack