1 1/8" Bore, the O.D. for the bore is 1.460". - (2) x 9/16" Ports & (2) x 1/2" Ports. - Smooth Top Style. -For Power Brake System Only. - No Bleeder Valve.
GM Brake Master Cylinder 1-1/8" Bore 9/16" & 1/2" Ports Dual Corvette Chrome
FD2704 FE2704 2704 Heavy-Duty Brake Master Cylinder – 1-1/2-inch bore size
FE2951 FD2951 29744 Heavy-Duty Manual Brake Master Cylinder - 1-1/4-inch bore
Baer 6150110 Remaster Bullet Brake Master Cylinder 1-1/8" Spacer Ford/GM Style
GM Aluminum Brake Master Cylinder 1-1/8'' 2 Port Smooth Top Chrome B10006