Overview
The Baer Brakes 4262262MG is an SS4 Plus rear disc brake kit finished in Monster Green. It pairs a 13.0 inch vented rotor with a four-piston S4 caliper and is built for Ford 9 inch rear ends with the early big bearing axle flange and a 5×5.00 wheel bolt pattern.
The kit arrives as one matched assembly: pre-assembled rotors, the S4 caliper, a backing plate that also houses a one-piece park brake shoe assembly, and braided hoses. The grade type is Performance, and the caliper is a fixed design with four pistons.
Key features
- Four-piston S4 fixed caliper with hard anodized aluminum pistons.
- Stainless steel abutments and noise suppression clips are part of the caliper design.
- Two-piece slotted, drilled and zinc-plated rotor on a billet aluminum hat.
- Dual seals for dust, weather and pressure.
- Powder coated Monster Green finish.
- CNC machined from US sourced forged or billet aluminum, with the caliper made in Phoenix, AZ.
- Braided DOT approved hoses and NAS high grade stainless hardware.
Rear brake service basics
Rear disc brakes do a larger share of the work when the vehicle is heavy or loaded, so keep the pads, rotors and calipers in step with each other. A caliper that sticks or drags can heat the rotor and wear the pads unevenly. Clean the caliper slide pins during service and confirm the piston moves freely before reinstalling the wheel.
The park brake shoes inside the backing plate should be inspected along with the service brake. Adjust them only after the service brake is set, and confirm the parking brake holds the vehicle on a grade before relying on it. Brake fluid absorbs moisture over time, so a fluid change at regular service intervals keeps the system responding well.
- Check for uneven pad wear
- Inspect braided hoses for chafing or bulges
- Confirm rotor face runout before final torque
- Use fresh brake fluid when bleeding the system
- Recheck hardware torque after the first few drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262262MG |
| UPC | 90127949818 |
| Caliper | S4, four-piston, fixed |
| Caliper color | Monster Green |
| Rotor outside diameter | 13.0 inch |
| Rotor construction | Vented, 2-piece |
| Rotor thickness | 0.81 |
| Rotor surface | Slotted, drilled and zinc plated |
| Pad type | DR1-C (FMSI DR1-C) |
| Hardware | NAS high grade stainless |
| Axle | Rear |
| Axle flange | Ford 9 Inch Early Big Bearing |
| Wheel bolt pattern | 5×5.00 |
| Lug count | 5 Lug |
| Minimum wheel diameter | 17.0 inch |
| Brake hose | Braided, DOT approved |
| Park brake | Included; park brake cables not included |
| Template | S135H |
| Grade type | Performance |
| Emission code | 6 |
| Sold as | Kit |
| Country of origin | USA |
Vehicle fitment
The kit is built for Ford 9 inch rear axles with the early big bearing axle flange, paired with a 5×5.00 wheel bolt pattern.
Wheel fit is not guaranteed for every wheel style or brand, so compare the S135H template with the wheel you intend to use.
Check that the rear axle carries the early big bearing flange, not the late big bearing style. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Park brake cables are not included, so plan to source them separately for the parking brake. Verify wheel clearance against the S135H template before the rotors are fitted. The rotors arrive pre-assembled with NAS high grade stainless hardware.
Have a qualified technician confirm the caliper and park brake setup, because rear brakes play a direct role in stopping the vehicle.
What’s included
The kit includes the Monster Green S4 caliper, two-piece slotted rotors with stainless hardware, the backing plate with its park brake shoe assembly, and braided hoses with hardware.
Not included: park brake cables.
