If you’re looking to upgrade your Chevy or GMC C10 truck's braking system, the Baer 12" SS4 Rear Brake Kit is a solid choice. I’ve had my hands on this kit, and let me tell you, it’s a game changer. The S4 calipers are built tough with a 4-piston design, and they’re mounted on a 12-inch rotor that’s not just any rotor—it’s slotted, drilled, and zinc plated. That means you get better heat dissipation and improved stopping power, which is crucial when you're pushing your truck to its limits.

One of the standout features of the S4 caliper is its D.O.T compliant dust and weather seals. This is a big deal if you plan on taking your truck off-road or just want to ensure it holds up against the elements. Plus, it uses the widely available DR1 or HB100 brake pads, so replacements won’t be a headache.

What really impressed me is the innovative backing plate. Not only does it serve as a caliper mount, but it also houses a modern 1-piece park brake shoe assembly. It’s a neat solution that keeps everything tidy and functional. And don’t forget the stainless braided hoses included in the kit—they add a nice touch of durability and flexibility.

Now, if you’re wondering about fitment, this kit is designed for the 1960-87 Chevy/GMC C10 2WD trucks with the OE large pattern 10/12 bolt C-clip housing ends and a 5-lug (5x5" BC) setup. Make sure your wheels are 16 inches or larger to accommodate this system.

Features:

• 2-Piece, 4-Piston S4 Caliper, proudly made in Phoenix, AZ
• CNC machined from US-sourced forged or billet aluminum—no cheap stuff here
• Powder-coated finish for added durability
• Hard anodized aluminum pistons and stainless steel abutments to prevent wear
• Dual seals to keep out dust and moisture while maintaining pressure
• 1-piece slot, drilled, zinc-plated rotor that’s built to last

Specifications:

• Applications: GM C10 Trucks 1960-1987
• Axle: Rear
• Caliper Color: Fire Red
• Piston Quantity: 4
• Caliper Type: Floating
• Disc Brake Pad FMSI Number: DR1-C
• Rotor Outside Diameter: 12.000 inches
• Rotor Thickness: 1.020 inches
• Surface Type: Slotted, drilled, and zinc plated
• Includes Park Brake: Yes
• Grade Type: Performance
• Minimum Wheel Diameter: 16 inches (make sure to verify with a template)

In short, if you're looking for a reliable, high-performance brake upgrade for your classic truck, the Baer 12" SS4 Rear Brake Kit is worth considering. It’s built with quality materials and designed to give you the stopping power you need without compromising on style. Happy driving!