Wilwood 140-12297-D Dynalite Front Brake Kit for GM G-Body 1980-87 with 12.19-inch Drilled and Slotted Iron Rotors
Wilwood 140-12297-D is a front-axle Dynalite kit with black four-piston calipers, 12.19-inch drilled/slotted rotors, hubs, pads and mounting hardware.
Requires the specified factory disc spindle with machining, cutting, drilling and tapping. This is not an unmodified-spindle bolt-on conversion. Follow Wilwood DS-877 and check the wheel template before purchase.
Supported G-body examples include Monte Carlo 1979–1988, Malibu 1979–1983, El Camino 1979–1987, Regal 1979–1987, Grand National 1982–1987 and Grand Prix 1979–1987. Cutlass fitment varies by year and trim. See the LTAC Garage model-specific notes. Do not apply a generic G-body year range to every model or to swapped spindles.
Flex hoses are separate. Verify the listed 220-7056 option against chassis fittings, routing and required length. Match the master cylinder, rear brakes and proportioning. Some 15-inch wheels may clear; diameter alone does not confirm clearance. Hubs support 5 x 4.50 and 5 x 4.75-inch patterns with 1/2-20 studs. Follow the instructions for wheel-to-hub contact and any required wheel protection or spacers.