Overview
The Baer Brakes 4262257CY is a complete SS4 Plus rear brake kit for Ford 8.8 inch C-clip rear ends with a 2.5 inch axle standoff and 4-lug wheels. It pairs a 4-piston S4 caliper finished in Comp Yellow with a 13.0 inch, two-piece slotted, drilled, zinc-plated rotor, giving the Ford 8.8 axle a two-piece rotor and a four-piston caliper in one kit.
Baer built the rear assembly around a backing plate that serves as the caliper mount and houses a modern one-piece park brake shoe assembly. Rotors arrive pre-assembled with NAS high grade stainless hardware, and stainless braided hoses are included. The kit uses the popular DR1-C pad type and features T compliant dust and weather seals. The 13 inch SS4 Plus fits most 17 inch or larger wheels, so confirm wheel clearance before starting a build.
Key features
- Four-piston S4 caliper manufactured in Phoenix, AZ
- CNC machined from US sourced forged or billet aluminum
- Powder coated finish in Comp Yellow
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- Two-piece slotted, drilled, zinc-plated rotor with billet aluminum hat
Choosing the right setup
A rear disc kit changes more than the stopping force at the wheel. A larger rotor and a four-piston caliper put more load on the hub, the wheel bearings and the axle flange, so the mounting surfaces should be clean and flat before assembly. Measure the inside clearance between the wheel spokes and the caliper body, since a larger rotor leaves less room than the stock setup.
Pad compound and rotor type should be chosen together. A two-piece rotor is often swapped as a unit because the hat and friction ring wear at different rates. Fluid lines, the brake master cylinder and the proportioning valve may also need a look when the front and rear brake balance changes after a major upgrade.
- Confirm the axle flange and standoff match before ordering
- Check wheel clearance with the caliper in place
- Inspect rotor hats for cracks and loose hardware after break-in
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262257CY |
| UPC | 90127944141 |
| Sold as | Kit |
| Caliper | S4, 4-piston, floating |
| Caliper color | Comp Yellow |
| Rotor outside diameter | 13.0 inch |
| Rotor type | Two-piece, vented, slotted, drilled, zinc plated |
| Rotor thickness | 0.81 |
| Axle flange | Ford 8.8 inch |
| Lug count | 4 lug |
| Wheel bolt pattern | 4×4.25 |
| Minimum wheel diameter | 17.0 inch |
| Pad type | DR1-C (FMSI) |
| Hose material | 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 built for rear axles with a Ford 8.8 inch axle flange, a C-clip axle style, a 2.5 inch axle standoff and a 4×4.25 bolt pattern. Lay the S135H template over the axle flange and compare the rotor and caliper to the wheel you plan to run.
Check the axle flange and wheel clearance before ordering, since Baer does not guarantee fit with every wheel style. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The park brake shoe assembly is housed in the backing plate, but park brake cables are not included, so cables must be sourced separately. The rotors are supplied pre-assembled, so use the NAS stainless hardware that comes with them. Brake work is safety critical: bed in the pads and test the pedal and park brake before driving.
What’s included
The kit includes the S4 four-piston rear calipers in Comp Yellow, two-piece slotted, drilled and zinc-plated rotors with billet aluminum hats and pre-assembled NAS stainless hardware, the Baer backing plate with one-piece park brake shoe assembly, and stainless braided hoses.
Not included: Park brake cables.
