The Allstar Performance Master Cylinder ALL41064 has a large 1-1/4 in bore that works well on vehicles requiring increased fluid volume for proper braking, or as an option when experiencing excessive pedal travel with a standard 1 in bore Corvette-style master cylinder. The cast iron master cylinder features a deep hole piston for use with manual or power brakes. The front brake port accepts 3/16 in steel brake line with a 3/8-24 in inverted flare nut. The rear brake port accepts 1/4 in steel brake line with a 1/2-20 in flare nut using the included adapter, or a 9/16-18 in flare nut with the adapter removed.
Spec Sheet: View PDF
FAQ
What is the bore size of the ALL41064 master cylinder?
It has a large 1-1/4 in bore.
When would this larger bore be used?
It is used on vehicles requiring increased fluid volume for proper braking, or as an option for excessive pedal travel with a standard 1 in bore master cylinder.
What size brake line does the front port accept?
The front port accepts 3/16 in steel brake line with a 3/8-24 in inverted flare nut.
What size brake line does the rear port accept?
The rear port accepts 1/4 in steel brake line, using a 1/2-20 in flare nut with the included adapter, or a 9/16-18 in flare nut with the adapter removed.
Can it be used with manual or power brakes?
Yes, the deep hole piston design supports both manual and power brake setups.

