If you're looking to upgrade your ride's braking performance, let me tell you about this rear brake system. The Baer SS4 setup comes equipped with some serious hardware—a 4-piston caliper that’s mounted to a solid 12-inch rotor. We're talking about a one-piece design here, complete with slots and drillings, and it’s zinc-plated to boot. This isn't just for show; it’s built for performance and durability.

One of the standout features is the billet backing plate. This isn't just a caliper mount; it’s also where the Banksia 1-piece park shoe lives. This design is a significant upgrade over the old-school drum-in-hat systems you often see. Trust me, this modern park brake assembly works way better and feels more reliable than those outdated options.

Now, a couple of important things to note: this is a General Fit Rear system, so you’ll need to grab your own park brake cables. And if you're rolling with a stock 9-inch Ford with a big bearing housing, this setup is designed just for you. The wheel bolt pattern is 5 x 5.000 inches, which is pretty standard, making it easy to match up with your existing wheels.

Why should you consider the SS4?

• The 12-inch rotor is directionally vaned, which helps with cooling and performance under stress.
• If you’re already using Baer’s Track4 front brake system, this rear setup is the perfect complement.
• The fully machined billet backing plate isn’t just tough; it also houses that nifty Banksia park brake assembly.
• Speaking of the park brake, it’s a modern take on the traditional drum-in-hat style, using the same shoe as the late model Corvette C5/C6, which is pretty cool.
• Everything you need comes in the package—hoses, fittings, and all the hardware.
• Those 12-inch rotors fit some 15-inch and most 16-inch wheels, but it's always good to double-check with a template.

The S4 Caliper is packed with features:

• Four 10mm cross bolts ensure maximum stiffness, so you know it’s sturdy.
• Stainless steel abutments and noise suppression springs keep things quiet and smooth.
• Hard anodized aluminum pistons add durability and performance.
• The internal crossover design is neat and efficient.
• Dual seals keep dust and weather out, meeting D.O.T. specifications.
• Each caliper has a machined logo that’s hand-painted, adding a unique touch.
• It uses a common 4-piston pad for easy replacements—look for part number DR1.
• You can get it in a black powder coat finish, with standard colors like red, black, or silver, and they even offer custom colors.
• Available for both front and rear, so you can match that look perfectly.
• The rear systems come with a drum-in-hat park brake, and if you have c-clip style axles, you're covered with Baer’s Verislide self-centering brackets.
• They use the right banjo-style fittings, steering clear of any pipe thread nonsense.
• And best of all, it’s 100% made in the USA with materials sourced right here.

So, if you’re serious about improving your braking game, the Baer SS4 rear brake system is a solid choice. It’s built for performance and reliability, and you’ll definitely feel the difference on the road or track.