Overview
The Baer Brakes SS4 Plus 4262689HO is a Hugger Orange rear brake kit for Ford 9 Inch Early Big Bearing rear ends. It uses a four-piston S4 caliper that clamps an 11 inch two-piece slotted, drilled, zinc-plated rotor, suited to anyone who wants stronger rear braking on a Ford 9 Inch axle.
Each rotor arrives pre-assembled with NAS high grade stainless hardware, and the kit also covers the mounting brackets, braided stainless hoses and hardware. Because Baer cannot guarantee fit across all wheel styles, compare the Template S125A to the wheel you plan to run.
Key features
- Two-piece, four-piston S4 caliper made in Phoenix, Az
- CNC machined from U.S.-sourced forged or billet aluminum
- Powder-coated Hugger Orange finish
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- Slotted, drilled, zinc-plated two-piece rotor with billet aluminum hat
- Steel braided hoses with DOT approval
Rear brake upgrade basics
A rear disc brake kit shares the work of slowing the vehicle with the front brakes, so a balanced setup helps the vehicle stop evenly under load. Rear calipers, rotors, pads and hoses form one system, and a change to one part often affects how the others wear and respond.
Before fitting any rear brake kit, look at the axle, the wheel clearance and the hydraulic lines that connect to the master cylinder. Brackets and hoses should be routed so they clear suspension travel and axle movement. Pads and rotors wear at different rates depending on driving style, so inspect them at each wheel removal or tire rotation.
Signs that rear braking needs attention include a pulsing pedal, grinding noise, pulling to one side, or a soft pedal feel. Rotor surfaces that show deep grooves or uneven wear should be measured and replaced as needed. Keep brake fluid clean and fresh, since moisture reduces braking performance over time.
- Inspect pads and rotors at every wheel removal
- Check hose routing for clearance at full suspension travel
- Replace pads and rotors as a matched set
- Bleed the system after any line or caliper work
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262689HO |
| UPC | 90127949269 |
| Caliper | S4, fixed, four pistons |
| Caliper color | Hugger Orange |
| Rotor type | Two-piece, vented, slotted, drilled and zinc plated |
| Rotor outside diameter | 11.0 inch |
| Rotor thickness | 1.020 inch |
| Axle flange | Ford 9 Inch Early Big Bearing |
| Bolt pattern | 5×4.50/5×4.75, 5 lug |
| Minimum wheel diameter | 15.0 inch |
| Pad FMSI number | DR1-C |
| Template | S125A |
| Hose material | Steel braided, DOT approved |
| Grade | Performance |
| Includes park brake | No |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
The kit fits the Ford 9 Inch Early Big Bearing axle flange and 5×4.50/5×4.75 bolt patterns, with Template S125A used for wheel clearance. Confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Pre-assembled rotors reduce the prep work, but the brackets and braided hoses still need to be fitted to the axle. Lay Template S125A against the wheel before mounting. Brake components are safety-critical, so a qualified technician should complete the installation.
What’s included
The kit includes S4 calipers, two-piece rotors pre-assembled with NAS high grade stainless hardware, all mounting brackets, stainless braided hoses and hardware.
Not included: park brake components, because the kit does not include a park brake.
