The UMI hub and bearing kit supports C5/C6 front brake conversions on 1978–1988 GM G-Body cars, providing an aluminum hub with 5 x 4-1/2 and 5 x 4-3/4 bolt patterns to face-mount C5 rotors in the factory location. The kit includes premium cups, cones, and rawhide seals for reliable service. Wheel studs are not included; C5 brakes require minimum wheel sizes for clearance—research fitment before purchase.
UMI Performance 78-88 GM G-Body C5/C6 Front Brake Conversion Hubs & Bearings