Overview
The Baer Brakes SS4 Plus rear brake system, part number 4262653HO, is a complete rear disc brake kit for Ford 8 inch and 9 inch small bearing axle flanges with a 5×5.00 inch bolt pattern. It pairs a 4-piston S4 caliper in Hugger Orange with a 13 inch, 2-piece slotted and drilled rotor, a park brake shoe assembly and stainless braided hoses, and it is sold as a kit.
The backing plate acts as the caliper mount and houses a 1-piece park brake shoe assembly, so the rear park brake is built into the same unit. The kit is designed for wheels 17 inch or larger. Wheel style and clearance vary, so test the fit against the S135H template before committing to a wheel.
Key features
- 4-piston S4 caliper, manufactured in Phoenix, AZ
- Two-piece 13 inch slotted, drilled, zinc-plated rotor with billet aluminum hat
- CNC machined from US-sourced forged or billet aluminum
- Powder coated finish in Hugger Orange
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual dust, weather and pressure seals
- Stainless braided DOT approved hoses
Choosing a rear brake upgrade
Rear brakes do less work than front brakes on most vehicles, but a larger rear rotor still changes how braking force is split between the axles. Owners who upgrade the front often add the rear so the braking feel stays balanced. Consider the master cylinder, the brake lines and the proportioning setup when the rear is changed, since these affect how the pedal responds.
A park brake shoe assembly built into the backing plate means the rear brake job also touches the parking function. Test the lever after installation, confirm the shoes release fully, and adjust as needed. Brake fluid should be fresh when the system is filled, because old fluid absorbs moisture and softens pedal feel.
- Upgrade front and rear together when possible
- Review pedal feel after bedding the pads
- Check the parking brake before every trail trip
- Flush old fluid during any brake system rebuild
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262653HO |
| UPC | 90127948354 |
| Sold as | Kit |
| Caliper | S4, 4-piston, fixed |
| Caliper color | Hugger Orange |
| Rotor | 13.0 inch vented, 2-piece |
| Rotor surface | Slotted, drilled and zinc plated |
| Rotor thickness | 0.81 |
| Rotor hat | Billet aluminum |
| Minimum wheel diameter | 17.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 inch |
| Axle flange | Ford 8 inch/9 inch small bearing |
| Brake pad FMSI number | DR1-C |
| Brake hose | Steel braided, DOT approved |
| Park brake | Included; park brake cables not included |
| Template | S135H |
| Grade type | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
The kit is designed around the Ford 8 inch and 9 inch small bearing axle flange, so the rear axle determines fit more than a model name does.
No year, make, model or trim is given for this kit. Confirm your vehicle’s year, model and trim before ordering, and use the S135H template to check wheel fit.
Installation notes
The park brake shoe assembly is built into the backing plate, and the rotors come pre-assembled with NAS high grade stainless hardware. Park brake cables are not included. Brake work should be performed by a qualified installer, and wheel clearance should be checked against the template before mounting.
What’s included
The kit includes the S4 4-piston caliper, the 13 inch two-piece rotors pre-assembled with NAS high grade stainless hardware, the backing plate with its 1-piece park brake shoe assembly, and stainless braided hoses and hardware.
Not included: Park brake cables.
