673 Series Slim-Line Master Cylinder Home > Master Cylinders >Push-Type Master Cylinders
>673 Series Master Cylinders
• Outlet Ports: 1/8" NPT
• Max Pressure = 1,200 psi
• For use with MIL-H-5606 Fluid
      Our standard master cylinder has a piston bore of 5/8" and is
  recommended for most aircraft. For aircraft with oversized tires, poor brake pedal geometry, etc. you may wish to use a master cylinder with a piston diameter of 9/16" which produces 19% more brake fluid pressure or 1/2" which produces 36% more pressure.
Click on Part Number for
Dimensional Data

Part Numbers 673-11&12 are direct replacements for RV-7 & RV-10
Part Numbers 673-13 is direct replacement for RV-8

Lower end is cross drilled with 3/16" diameter holes for inline or 90 degree installation.
Lower end "boss" is 3/4" diameter and 0.680" long.

Part Number
673-10 shown

Piston Stroke = 1.4"

Displacement of master cylinders with a piston bore of 5/8" is 0.429 cu-in.

Displacement of master cylinders with a piston bore of 9/16" is 0.348 cu-in.

Displacement of master cylinders with a piston bore of 1/2" is 0.275 cu-in.

Part No.
5/8" Bore
Part No.
9/16" Bore
Part No.
1/2" Bore
Pin-to-Pin
Length
Upper
Attachment
Lower
Attachment
Weight Price
673-1 673-901 673-501 7.5" Clevis Left Offset 5.9 oz. $239.00
673-2 673-902 673-502 7.5" Clevis Right Offset 5.9 oz. $239.00
673-9 673-909 673-509 7.5" Clevis Cross Drilled 5.9 oz. $239.00
673-10 673-910 673-510 8.0" Clevis Cross Drilled 6.2 oz. $239.00
673-11 673-911 673-511 7.5" 1/2" Eye Bolt Left Offset 5.9 oz. $239.00
673-12 673-912 673-512 7.5" 1/2" Eye Bolt Right Offset 5.9 oz. $239.00
673-13 673-913 673-513 7.5" 1/2" Eye Bolt Slotted 90° 5.9 oz. $239.00
673-14 673-914 673-514 7.5" 1/2" Eye Bolt Slotted Inline 5.9 oz. $239.00
673-15 673-915 673-515 7.5" 3/8" Eye Bolt Left Offset 6.6 oz. $239.00
673-16 673-916 673-516 7.5" 3/8" Eye Bolt Right Offset 6.6 oz. $239.00