Baer Brakes 4262279B SS4 Rear Big Brake Kit 12-Inch Rotors Black Calipers with Parking Brake

The Baer Brakes 4262279B SS4 Rear Big Brake Kit is a complete, bolt-on rear disc brake upgrade finished in a durable black powder coat. Featuring a 12-inch slotted, cross-drilled, zinc-plated rotor paired with Baer's S4 four-piston caliper, this kit delivers serious stopping performance over factory brake hardware. The entire system is proudly designed and manufactured in the USA.

S4 Four-Piston Caliper

The heart of the SS4 system is Baer's S4 caliper, a compact yet powerful two-piece, four-piston unit CNC machined from US-sourced forged or billet aluminum right in Phoenix, AZ. Hard anodized aluminum pistons apply clamping force to both sides of the rotor simultaneously for balanced, consistent braking. Stainless steel abutments and noise suppression clips are included for a quiet, rattle-free installation. The caliper is finished with a black powder coat for lasting corrosion resistance.

12-Inch Slotted & Drilled Rotor

The one-piece rotor is manufactured from mill-balanced cast steel and features a combination slot-and-drill pattern for improved bite, heat dissipation, and gas evacuation under hard braking. A protective zinc plating guards against rust and corrosion. This 12-inch rotor is designed to fit most 16-inch or larger wheels.

D.O.T.-Compliant Dual-Seal Design

The S4 caliper incorporates dual D.O.T.-compliant seals — both dust/weather and pressure seals — to protect internal components and maintain consistent pedal feel across a wide range of conditions.

Integrated Parking Brake

Baer's uniquely designed backing plate serves double duty: it acts as the caliper mount and houses a modern one-piece park brake shoe assembly, eliminating the need for a separate drum-in-hat setup and simplifying the overall installation.

Complete Kit Contents

• 12-inch slotted, cross-drilled, zinc-plated one-piece rotor
• Two-piece, 4-piston S4 caliper in black powder coat finish
• Hard anodized aluminum pistons with stainless steel abutments
• Noise suppression clips
• Dual D.O.T.-compliant dust/weather and pressure seals
• Billet backing plate with integrated one-piece park brake shoe assembly
• Stainless steel braided brake hose with banjo fittings
• DR1 / HB100 compatible pad type (street ceramic pads compatible)

Note: Parking brake cables are not included. Race compound pads are available separately. Wheel fitment should be verified using Baer's fitment templates, as brake clearance varies by wheel brand and style.