The Wilwood Dynapro lug‑mount single rear kit uses a billet lug‑drive system retained by an internal snap‑ring to let rotors expand independently of the hat and avoid thermal distortion. That keeps rotors flatter under heat. The design includes spring‑loaded stainless inserts to protect the aluminum hat. This single‑rear configuration is available for 1958–1964 Oldsmobile and Pontiac applications and in multiple rotor diameter options.
Wilwood Dynapro Lug Mount Single Rear Dynamic Kit SA Drilled 58-64 Olds/Pont .690in Studs