Overview
The Baer Brakes SS4 rear brake system, part number 4262241FR, is a rear disc brake kit built around a 4-piston S4 caliper and a 12-inch slotted, drilled rotor. It is made for Ford 8.8 inch C-clip rear ends with a 2.5 inch axle standoff and a 5 lug, 5×4.50 wheel bolt pattern.
Baer’s backing plate serves as the caliper mount and also houses a one-piece park brake shoe assembly, so the parking brake function is built into the kit. Stainless braided hoses are included. The S4 caliper is manufactured in Phoenix, Arizona, and the CNC machined components are made from US-sourced forged or billet aluminum.
Key features
- 4-piston S4 caliper, 2-piece design, powder coated finish
- CNC machined from US-sourced forged or billet aluminum
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for pressure and dust/weather protection
- 12-inch vented, 1-piece slotted, drilled and zinc-plated rotor
- Uses the popular DR1 or HB100 pad type
- One-piece park brake shoe assembly housed in the backing plate
- Stainless braided hoses are included and are DOT approved.
Ongoing care
Rear disc brakes need routine attention to stay predictable. Keep the caliper, pads and rotor free of road salt and grit, and wipe the friction surfaces when the vehicle has been driven through mud. A rotor with deep grooves, blue discoloration or a pulsing pedal is a sign that it may need replacement, while pads that are thin or squeal at rest should be changed.
The park brake shoe is less visible, so check its function periodically. A parking brake that holds weakly or drags after release points to adjustment or shoe wear. Inspect the stainless hardware and hose ends at each service and keep fluid at the correct level, since a leak at the rear caliper affects both service and parking braking.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262241FR |
| UPC | 90127944684 |
| Sold as | Kit |
| Caliper | S4, 4-piston, floating, 2-piece |
| Caliper color | Fire Red |
| Caliper finish | Powder coated |
| Rotor | 12.0 inch, vented, 1-piece, slotted, drilled, zinc plated |
| Rotor thickness | 1.02 |
| Brake pad type | DR1 or HB100; FMSI DR1-C |
| Axle flange | Ford 8.8 inch |
| Axle standoff | 2.5 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.50 |
| Minimum wheel diameter | 16.0 inch |
| Template | S113E |
| Park brake | Included, one-piece shoe assembly in backing plate |
| Park brake cables | Not included |
| Brake hose | Braided, DOT approved |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
Built for Ford 8.8 inch C-clip rear ends with a 2.5 inch axle standoff, a Ford 8.8 inch axle flange and a 5×4.50 bolt pattern. Verify the year, model and trim against your vehicle before ordering.
This kit is a rear axle system, so front axles and rear axles other than the Ford 8.8 inch design are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Baer recommends using the S113E template and comparing it to your chosen wheel before installing, because the company cannot guarantee fit with every wheel style. The park brake cables are not included, so a park brake cable setup must be sourced separately. Brake work on a rear axle affects both stopping and parking, so have the installation checked before driving.
What’s included
The kit includes the S4 4-piston caliper, the 12-inch rotor, the Baer backing plate with its one-piece park brake shoe assembly, and stainless braided hoses.
Not included: Park brake cables.
