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This is a complete bolt in kit that uses a modern power booster and dual circuit master cylinder mounted to the firewall using the factory firewall access plate opening. It includes a new brake pedal that swings from a higher location (looks like it could be original too). This modern GM booster and master cylinder give a significantly improved braking feel and power while adding safety through the dual circuit system.
This can be used with factory drums, disc/ drum or disc/ disc. Select what brakes you have at checkout and I will send the correct proportioning valve. 
It will have the pedal feel of a modern car- minimal effort required with a positive and firm feel. No more soft or sloppy pedal! 
Installation is fairly straightforward- no cutting required, this kit doesn't involve anything permanent that can't be undone in a couple hours! You have to remove the driver side firewall access plate, master cylinder, and then this kit bolts in.
Two brake lines are included although the included lines will require some finesse by the installer. One goes from rear proportioning valve to the original junction block mounted to the driver side frame rail in place of the line that originally lead to the front brakes.  The other brake line goes from the front of the new proportioning valve to the factory T junction block located near the front driver side wheel and feeds the front brakes. Installation time is about 4 hours.
This ONLY works on 1950, 1951, 1952, and 1953 Buicks Super and Roadmaster models, NOT the Special model.
This kit comes with everything including proportioning valve, brake lines, and hardware! All you need is brake fluid and a port on your intake to plug into vacuum.
Included Parts: 
  • Firewall box 
  • Brake pedal bracket
  • Brake pedal W/ clevis pin, bushings and rubber pad 
  • GM style brake booster
  • GM style master cylinder 
  • All new high quality bolts 
  • 2X 3/16" brake lines- custom cut, bent, and flared
  • Proportioning Valve w/ mount bracket and metal lines (mounts beneath MC, pictured)  
  • 3/8 Vacuum hose
  • Misc. hardware 


All metal parts are CAD designed, laser cut, formed on a computer controlled press brake, professionally tig welded, and powdercoated satin black for consistent high quality results.

1950-1953 Buick Roadmaster Super Power Brake Conversion Master Cyl. Booster G12

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