NZKW master cylinders are 100% machined billet aluminum for extra strength.

A standard 2-1/4″ pattern used by most brake companies so they will mount to most pedal assemblies and firewalls. The mounting flange can rotate to be a vertical bolt pattern or horizontal pattern. Uses DOT 3, DOT 4 or DOT 5.1 brake fluid.

inlet 7/16-20UNF

outlet  3an 3/8

0.7 inch

Size comparison for reference:

Master cylinder body width:
Remote reservoirs master cylinder
51mm x 103mm 4an

Master cylinder total height including the round cap:
130mm x 43mm