This Wilwood rotor adaptor for Pro Street/Drag hubs adapts rotor interfaces to a 6 x 6.25 bolt circle and a 5 x 3.88 bolt circle pattern. It’s intended for pro-street and drag hub applications where these bolt circle specifications are required, helping accommodate rotor-to-hub compatibility where patterns differ. Use this adaptor when matching rotors to hubs with the listed bolt circle dimensions.

Wilwood Rotor Adaptor Floating/Fixed - Pro Street/Drag Hub 6 x 6.25 BC 5 x 3.88 BC