Mopar 9" Dual Power Brake & Disc/ Disc Wilwood Assembly, Charger, GTX, Road Runner, E-Body

1966-74 Mopar B & E Body 9" Dual Power Brake Booster Conversion Kit with Wilwood Master Cylinder

Charger / Challenger / Cuda / GTX / Road Runner / Satellite · Manual to Power Conversion · 9" Dual Booster · Wilwood 1" Bore Master · Adjustable Valve · 

Your Mopar will stop on a dime. This Pirate Jack kit converts your manual brake B or E Body to power brakes with a massive 9" dual diaphragm power brake booster, a Wilwood 1" bore black tandem master cylinder, and an adjustable knob proportioning valve kit with stainless steel lines. The black powder-coated firewall bracket gives the whole setup a clean, all-black look under the hood.

It's built for cars that came from the factory with manual brakes, with the master cylinder mounted directly to the firewall. Every part is brand new. Nothing is rebuilt or remanufactured.

What's Included

• 9" dual diaphragm power brake booster
• Wilwood 1" bore tandem master cylinder, black (260-8555-BK)
• Black powder-coated booster mounting bracket for the firewall (converts manual to power)
• Adjustable knob proportioning valve kit with stainless steel lines & bracket

Wilwood Master Cylinder Specs

Why Buy This Kit

• ✔ Big stopping power: a 9" dual diaphragm booster for an easy, confident pedal
• ✔ Genuine Wilwood master cylinder: lightweight aluminum, built for power brake use
• ✔ Dial in your brake bias with the adjustable knob proportioning valve
• ✔ Stainless steel lines included from the valve to the master cylinder
• ✔ All-black look: black booster bracket, black Wilwood master and black valve
• ✔ Complete conversion: booster, master, valve and firewall bracket in one box
• ✔ All new, nothing rebuilt or remanufactured

Fitment

Manual brake cars only. Not sure about your car? Send us a message or call 866-601-4455 before ordering.

Before You Order: Please Read

• ⚠️ Manual brakes only: If your car had power brakes from the factory, this is probably not the kit that you want. The idea behind this kit is to convert a manual brake car, that has a master cylinder mounted on the firewall, to power brakes. If your car originally had a booster mounted to the firewall, do not buy this kit. The bracket will not give the correct pedal ratio for your car.
• Brake system: The proportioning valve is adjustable, so you can set your front-to-rear balance after installation.
• Year, make & model: Please add your car's year, make and model in the notes at checkout, or message us right after you purchase.

⚠️ Installation Notes

• Master cylinder: Bench bleed the master cylinder before installing it. Use fresh DOT 3 or DOT 4 brake fluid.
• Brake bias: Set your front-to-rear balance with the adjustable knob proportioning valve.
• Brake lines: Have your brake lines ready to connect to the new valve.
• Test drive: Check for leaks and test the brakes at low speed in a safe area before driving.

Free Tech Support

Have a question before or after your purchase? Call our tech team at 866-601-4455.

• Monday-Friday, 8:00 AM - 4:00 PM EST
• Limited weekend availability

A 9" dual booster and a genuine Wilwood master for your manual brake Mopar. Order your power brake conversion from Pirate Jack today.