Overview
The Baer Brakes SS4 Plus 13.0 Inch rear brake system, part number 4262255CY, is a complete rear disc brake kit with a 13-inch two-piece slotted, drilled rotor and a 4-piston S4 caliper in Comp Yellow. It is built for rear ends with Ford 8 inch and 9 inch small bearing housing ends and a 5×4.50 or 5×4.75 inch wheel bolt pattern.
Baer’s backing plate serves as the caliper mount and also houses a one-piece park brake shoe assembly, so the kit covers park braking as well as service braking at the rear. The rotors arrive pre-assembled with NAS high grade stainless hardware, and stainless braided hoses are included. Confirm fit for your vehicle’s year, model and trim before ordering.
Key features
- 4-piston S4 caliper in Comp Yellow with a powder coated finish
- Two-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat
- Backing plate doubles as the caliper mount and houses a one-piece park brake shoe assembly
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure, with T compliant dust and weather seals
- CNC machined from US sourced forged or billet aluminum, manufactured in Phoenix, Az
- Uses the popular DR1-C pad type (FMSI DR1-C)
- Stainless braided hoses, DOT approved
Before you buy the kit
A rear disc kit changes more than stopping power. The rotor, caliper and backing plate all have to line up with the axle flange, bearing housing and wheel before the vehicle moves again. Measure the bolt pattern, check the axle type on the housing, and confirm the wheel clears the caliper with the rotor in place. Heavier rear brakes also put more load on the hubs and bearings, so inspect those parts during the install.
Because the park brake shoe sits inside the backing plate, parking performance depends on that assembly as much as the hydraulic side. Test the parking brake on a slope with the vehicle held securely, and adjust it before regular use. Rear pads can wear faster when the vehicle is loaded, so check thickness at the first service and replace them before the wear indicator contacts the rotor.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262255CY |
| UPC | 90127947500 |
| Sold as | Kit |
| Caliper | S4, 4-piston, fixed |
| Caliper color | Comp Yellow |
| Rotor | 13.0 inch outside diameter, 2-piece, vented, slotted, drilled, zinc plated |
| Rotor hat | Billet aluminum |
| Rotor thickness | 0.81 |
| Axle | Rear |
| Axle flange | Ford 8 inch/9 inch small bearing |
| Wheel bolt pattern | 5×4.50/5×4.75 inch |
| Lug count | 5 |
| Minimum wheel diameter | 17.0 inch |
| Brake pad type | DR1-C (FMSI DR1-C) |
| Hose | Steel braided, DOT approved |
| Park brake | Included; park brake cables not included |
| Template | S135H |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
Fitment is by axle: the kit is designed for rear ends with a Ford 8 inch/9 inch small bearing housing end and a 5×4.50/5×4.75 inch bolt pattern. Fit to every wheel style is not guaranteed, so compare template S135H with your wheel before ordering.
It covers only Ford 8 inch and 9 inch small bearing housing ends, and other axle flanges are not covered. Make sure the year, model and trim suit your vehicle before ordering.
Installation notes
The 13 inch rotor needs wheels 17 inch or larger, so check wheel clearance with template S135H before mounting. Park brake cables are not included with the kit. Brake work should only be done with the vehicle safely supported on jack stands.
What’s included
The kit includes the S4 4-piston caliper, the 13.0 inch two-piece rotor with billet aluminum hat, the backing plate with its one-piece park brake shoe assembly, and stainless braided hoses with stainless hardware.
Not included: Park brake cables.
