Hawk ER-1 front brake pads for 1988–1991 Mazda RX-7 1.3L 10th Anniversary models provide a direct-fit option for single‑piston calipers. The ER-1 pads are listed at 0.540" thickness and note compatibility with Wilwood SL, AP Racing and Outlaw applications. Manufactured to Hawk’s OE-focused standards, they’re intended to fit existing brake hardware without modification.
Hawk 88-91 Mazda RX-7 1.3L 10th Anniversary 1 Piston Caliper Front ER-1 Brake Pads