Wilwood FNSL4R-MC4 rear axle kit pairs Narrow Superlite calipers and the MC4 parking brake assembly with 12.88" rotors to upgrade rear braking alongside front big-brake systems. BP-10 pads and rotor sizing are matched to OEM master cylinder output and ABS function to preserve balance and bias, delivering improved brake performance, longevity, and a refined appearance for custom or higher-demand vehicles.
Wilwood Narrow Superlite 4R / MC4 Rear Kit 12.88 Drilled Currie Pro-Tour Unit Bearing Floater