Baer Brakes 4302424B Rear Disc Brake Kit SDZ with Park Brake - 13-Inch SS4+ Black

The Baer Brakes 4302424B is a complete 13-inch SS4+ rear big brake upgrade kit finished in black powder coat with a slotted, drilled, and zinc-plated (SDZ) rotor configuration. Engineered and assembled in Phoenix, AZ, this system delivers serious stopping power with a clean, factory-quality appearance for street-driven performance and custom builds.

At the heart of the system is Baer's 2-piece, 4-piston S4 caliper, CNC machined from US-sourced forged or billet aluminum. The caliper features hard anodized aluminum pistons, stainless steel abutments, and noise suppression clips for smooth, quiet braking. Dual D.O.T.-compliant seals—one for dust/weather protection and one for pressure integrity—keep the caliper performing reliably in all conditions. The caliper uses the popular DR1-C street pad type.

The 2-piece rotor pairs a slotted, drilled, zinc-plated iron ring with a billet aluminum hat, pre-assembled using NAS high-grade stainless hardware. This combination reduces unsprung weight while resisting corrosion and improving heat dissipation. The 13-inch diameter is designed to fit most 17-inch or larger wheels.

This kit includes Baer's unique backing plate that serves a dual purpose: it acts as the caliper mounting bracket and houses a modern 1-piece integrated park brake shoe assembly, making it a true bolt-on solution for vehicles requiring a functional parking brake. Stainless braided brake hoses and all necessary mounting hardware are also included.

Key Features:

• 13-inch 2-piece slotted, drilled, zinc-plated rotor with billet aluminum hat
• 2-piece, 4-piston S4 caliper — CNC machined in Phoenix, AZ from US-sourced forged or billet aluminum
• Black powder coat finish — all coating done in-house
• Hard anodized aluminum pistons with stainless steel abutments
• Dual D.O.T.-compliant seals (dust/weather and pressure)
• Noise suppression clips included
• Integrated 1-piece park brake shoe assembly
• Rotors pre-assembled with NAS high-grade stainless hardware
• Stainless braided brake hoses and mounting hardware included
• Fits most 17-inch or larger wheels
• Uses DR1-C pad type

The Baer SS4+ is a complete, ready-to-install rear brake system ideal for muscle car restorations, pro-touring builds, and high-performance street applications where a parking brake is required.