Overview
The Baer Brakes 4262260CY is an SS4 Plus rear brake system kit in Comp Yellow, made for Ford 9 inch early big bearing rear axle housing ends with a 5×4.50/5×4.75 bolt pattern. It pairs a four-piston S4 caliper with a 13-inch, two-piece slotted, drilled, zinc-plated rotor, so a buyer looking for a large rear disc brake upgrade for a Ford 9-inch axle can find the full set under one part number.
The backing plate serves as the caliper mount and houses a one-piece park brake shoe assembly, so parking brake hardware comes built into the kit. The kit uses the DR1-C pad type. Braided hoses and hardware are included, and the rotors come pre-assembled with NAS high grade stainless hardware. The grade type is performance, and the kit is manufactured in Phoenix, Az.
Key features
- 13-inch, two-piece slotted, drilled and zinc-plated rotor with a billet aluminum hat
- Rotors pre-assembled with NAS high grade stainless hardware
- Four-piston S4 caliper, CNC machined from US-sourced forged or billet aluminum, with powder coated finish
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- One-piece park brake shoe assembly housed in the backing plate
Choosing a rear brake setup
A large rear disc kit changes more than the stopping force at the axle. A bigger rotor adds mass and heat capacity, so the rest of the braking system has to match it. Before buying, measure the wheel’s inside clearance against the caliper and rotor, and make sure the hub face and pilot suit the axle flange you are working with. Choosing a wheel with enough room is part of the job, not an afterthought.
Pad choice matters as much as the rotor. Stick with the pad type the kit calls for, and avoid mixing aggressive street compounds with heavy trail use unless you accept that trade-off. Fresh brake fluid should go in when the system is filled, and the hoses should be routed clear of the driveline, springs and tires before the first bleed.
- Measure wheel clearance over the caliper before mounting
- Route hoses clear of moving suspension parts
- Bleed the system after any hose or caliper work
- Replace pads and rotors together when wear is uneven
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262260CY |
| UPC | 90127948941 |
| Sold as | Kit |
| Caliper | S4, four-piston, fixed |
| Caliper color | Comp Yellow |
| Rotor outside diameter | 13.0 inch |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor thickness | 0.81 |
| Rotor hat | Billet aluminum |
| Axle | Rear, Ford 9 Inch Early Big Bearing |
| Lug count | 5 lug |
| Bolt pattern | 5×4.50/5×4.75 |
| Minimum wheel diameter | 17.0 inch |
| Pad FMSI number | DR1-C |
| Park brake | Included; park brake cables not included |
| Hose material | Steel braided, DOT approved |
| Template | S135H |
| Emission code | 6 |
| Grade type | Performance |
| Country of origin | USA |
Vehicle fitment
It is built for Ford 9 inch early big bearing rear axle flanges. Check the axle flange and S135H template against your application and wheel before ordering.
The kit is not confirmed for any specific model, and Baer cannot guarantee fit into every wheel style. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The 13-inch rotor needs a wheel with a minimum diameter of 17.0 inch, so check wheel clearance with the S135H template before mounting. Park brake cables are not part of this kit, so plan to source them separately if the parking brake is to be connected.
What’s included
The kit includes the S4 caliper, the 13-inch rotor pre-assembled with stainless hardware, the backing plate with its park brake shoe assembly, and braided hoses with hardware.
Not included: Park brake cables.
