Street Rod Life

Baer’s Billet Master for Mopars


Baer’s new Billet Master Cylinder is now available for Mopars

Words & Photos: Todd Ryden

For many street rodders, braking performance may not be as high on the “must have” list as it should. Even if you’re building a cruiser and aren’t concerned with 100-0 mph stops and making laps, you still need to think through the complete brake system and the components you plan to use.

 We really like the feel and fit of the screw-down reservoir caps and seals.

We really like the feel and fit of the screw-down reservoir caps and seals.

One of the most important parts of the brake system is the master cylinder. In fact, when you really stop (get it?) and think about it, the master cylinder is truly the heart of the brake system.

It has a reservoir to hold the brake fluid, and it converts the mechanical effort from the brake pedal into hydraulic pressure to activate the brake calipers or drums. It also plays a decisive role in your vehicle’s resulting pedal effort, modulation, and the overall braking effectiveness of the system.


For Mopar owners, here’s what you need to know about the mounting area of the Remaster.

To simplify its operation, the cylinder contains a piston that is pushed through a bore when pressure is applied to the brake pedal. Within the cylinder, there are small ports that direct the fluid to the proper brake circuit. As the piston is pushed into the cylinder, it pressurizes the system and calipers with brake fluid.

Baer finally introduced their own master cylinder to complement their line of four- and six-piston calipers and performance braking components — and it was well worth the wait. The team started with a clean sheet, as well as a block of billet aluminum.

The entire master cylinder is CNC machined for absolute precision, not to mention super cool looks. It was designed to be as compact as possible to solve fitment issues, and the outlets can be had on the left or right side of the unit, saving a lot of plumbing issues right off the top.

We happened by Baer’s Phoenix, Arizona, facility when they were wrapping up an installation of their new Mopar Remaster on a ’69 Dart. (They had also just installed a prototype S4 disc brake kit behind the Dart’s 15-inch wheels, so Mopar fans can watch for that soon, too!)


Mopar fans will smile at the sight of the four-bolt flange machined onto the Remaster, so they can bolt one directly onto their Pentestar hot rod.

Even if you’re not stepping up to one of Baer’s high-performance disc brake systems, you can still use a Remaster. The looks alone should be reason enough, but the compact size, screw down caps, and versatile outlets really make the choice simple.

Baer now offers the Remaster for GM, Ford, and Chrysler applications, in three different bore sizes. Also, if you’re working with a special color under the hood, Baer offers custom powder coating to create a master cylinder for any unique application.

Bore Sizes and Options: Selecting a Bore Size Selecting a master cylinder is not only important for the operation of the brake system, but it will also have an effect on the pedal feel. This is where knowing the pedal ratio and the force used will come into play; however, for most street rodders, it can be narrowed down to a couple sizes. Baer offers two different bore sizes for their Mopar Remaster; 15/16- inch and 1 inch. (For Chevy and Ford applications, there is also a 1 1/8 inch.) Their rule of thumb is to use the 15/16-inch for manual brake systems and the 1 inch for vacuum power assist, but it’s best to review your entire brake system, vehicle, and driving style. Keep in mind that a larger cylinder bore creates more fluid volume, while a smaller cylinder produces more pressure. If you’re going to have a very short pedal ratio, a smaller cylinder may create a brake system with little “feel” or modulation. Conversely, a softer, longer pedal may be slow reacting and take too much movement to effectively slow the vehicle.

Baer • 602-233-1411