| Our largest bore diameter master cylinders. 
 Note: The larger the bore diameter, the less psi it
 produces with the same pedal force.
 
 Piston Stroke = 1.02"
 
 Part Number
 678-4 shown
 
 
 |  •Displacement of 678 series = 0.80 cu-in•Displacement of 679 series = 0.61 cu-in
 • Outlet Ports: 3/8-24
 • Max Pressure = 1,200 psi
 • For use with MIL-H-5606 Fluid
 |