Ford Mustang Brake Kit - Rear - Baer Brakes - SS4+ Deep Stage 2-Piece Slot, Drilled, Zinc-Plate Rotors + HB540 Pads - Clear - `15-`23
Ford Mustang Brake Kit - Rear - Baer Brakes - SS4+ Deep Stage 2-Piece Slot, Drilled, Zinc-Plate Rotors + HB540 Pads - Clear - `15-`23

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Ford Mustang Brake Kit - Rear - Baer Brakes - SS4+ Deep Stage 2-Piece Slot, Drilled, Zinc-Plate Rotors + HB540 Pads - Clear - 15-23. A compact, drag-focused rear system that delivers confident, consistent braking for S550 builds running 15-inch wheels.
The SS4+ Deep Stage pairs Baer’s 4-piston S4 calipers with 11.62" x .705" two-piece rotors, pre-assembled with NAS stainless hardware. It’s the lightest SS4+ Deep Stage configuration, recommended for cars that rely on a parachute and/or lighter vehicles; full-weight S550s that depend on brakes alone should consider Version 2.0. Hard-anodized aluminum pistons, stainless abutments, and noise-suppression clips enhance durability and control. Includes HB540 pad type, powder-coated clear calipers, and all required mounting hardware. Manufactured in Phoenix, AZ.
Features
- 4-piston S4 calipers, powder-coated clear finish
- 11.62" x .705" 2-piece slotted/drilled, zinc-plated rotors
- Rotors pre-assembled with NAS stainless hardware
- HB540 pad type and complete mounting hardware
- Fits 2015-2023 Mustang S550 (except GT350)
- Designed to fit 15" wheels
- Hard-anodized pistons, stainless abutments, noise-suppression clips
- Lightweight SS4+ Deep Stage configuration
Have questions or need fitment guidance? Call us—our team can help and schedule installation or customization at our Austin, Texas or Los Angeles, California area shops: 512-982-9393 (TX) or 562-981-6800 (CA).
Buying multiple items? Contact us for potential shipping discounts.
We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov





