Overview
The Baer Brakes SS4 Plus rear brake system, part number 4262653FR, is a disc brake kit with a 4-piston S4 caliper and a 13 inch, 2-piece slotted, drilled, zinc plated rotor. It is matched to rear ends using the Ford 8 inch and 9 inch small bearing axle flange and a 5×5.00 inch bolt pattern. The caliper is Fire Red, and the listed minimum wheel diameter is 17.0 inch.
A 1-piece park brake shoe assembly is housed inside Baer’s backing plate, which also serves as the caliper mount. The rotor is delivered with NAS high grade stainless hardware pre-assembled, and stainless braided hoses come with the kit. The pad type is DR1-C, and Baer’s template for checking wheel fit is S135H.
Key features
- 4-piston S4 caliper manufactured in Phoenix, Arizona
- CNC machined from US sourced forged or billet aluminum
- Powder coated Fire Red finish
- Hard anodized aluminum pistons, stainless steel abutments and noise suppression clips
- Dual dust, weather and pressure seals
- 2-piece slotted, drilled, zinc plated rotor with billet aluminum hat
Choosing a rear axle match
A rear disc brake conversion works as a system. The caliper, backing plate, rotor and hoses have to line up with the axle flange, bearing housing and wheel before any of the parts are useful. Start by confirming the axle type and bolt pattern on the vehicle, then check that the wheel clears the caliper and rotor hat with the template before buying tires or spacers.
Because the backing plate also carries the park brake shoe assembly, a conversion often involves the parking brake hardware as well. Old park brake cables that have stretched, frayed or stuck should be replaced rather than reused with new shoes. Brake pads, wheel studs and rotor hardware are commonly checked or renewed at the same time, since the work already requires the wheels and hubs to come off.
- Compare the axle flange and bolt pattern before ordering
- Check wheel clearance with the template before mounting tires
- Inspect existing park brake cables and wheel studs
- Plan a bleed of the new hydraulic lines after installation
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262653FR |
| UPC | 90127948316 |
| Caliper | S4, 4-piston, fixed |
| Caliper color | Fire Red |
| Rotor outside diameter | 13.0 inch |
| Rotor type | 2-piece |
| Rotor construction | Vented, slotted, drilled, zinc plated |
| Rotor hat | Billet aluminum |
| Rotor thickness | 0.81 |
| Axle | Rear |
| Axle flange | Ford 8 inch/9 inch small bearing |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 inch |
| Minimum wheel diameter | 17.0 inch |
| Pad type | DR1-C |
| Brake hose | Steel braided, DOT approved |
| Park brake | Included |
| Park brake cables | No |
| Template | S135H |
| Emission code | 6 |
| Grade | Performance |
| Format | Kit |
| Country of origin | USA |
Vehicle fitment
The kit is built for the Ford 8 inch and 9 inch small bearing rear axle flange, which is an axle reference rather than a specific vehicle. Compare the 5×5.00 inch bolt pattern and 17.0 inch minimum wheel diameter with your rear end. Confirm fit for your vehicle’s year, model and trim before ordering.
Because Baer cannot guarantee fit into every wheel style, use template S135H to test the wheel you plan to run. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The park brake shoe assembly is housed in the backing plate, so review the parking brake layout on your axle before disassembly. Park brake cables are not included. Use template S135H to check the wheel before mounting. A qualified technician should install the system and test the brakes before the vehicle is returned to use.
What’s included
The kit contains the S4 caliper, the backing plate with its park brake shoe assembly, the 13 inch 2-piece rotor, and stainless braided hoses. The rotor arrives with NAS high grade stainless hardware already fitted.
Not included: park brake cables.
