Overview
The Baer Brakes 4262259MG is an SS4 rear brake kit finished in Monster Green, designed for Ford 9 inch early big bearing rear axle flanges with a 5×4.50/5×4.75 bolt pattern. It combines a four-piston S4 caliper with a 12-inch, one-piece slotted, drilled and zinc-plated rotor, giving five-lug Ford 9-inch axles a rear disc option.
The backing plate holds the caliper and houses a one-piece park brake shoe assembly, so the parking brake shoes come built into the kit. Braided hoses are supplied with it. The pad type is DR1-C, and the minimum wheel diameter is 16.0 inch.
Key features
- Monster Green powder coated S4 caliper with four pistons
- One-piece 12-inch rotor, slotted, drilled and zinc plated
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual dust, weather and pressure seals on the caliper
- Park brake shoe assembly integrated into the backing plate
- Braided hoses are included, made of braided steel and DOT approved.
Park brake and wheel clearance
Many rear disc setups on a Ford 9-inch axle are upgraded for stopping power, but the parking brake often gets overlooked. The parking brake shoes sit in the same space as the caliper mount, so cable routing and shoe position should be checked before the rotor goes on. Keep the cable path clear of the axle tube and any brake line.
Wheel clearance is the other check. Compare the rotor and the wheel’s minimum diameter with the template before mounting, and leave room between the wheel and the caliper. The Monster Green finish is cosmetic and does not change clearance, so judge fit by measurement rather than color.
- Set cable routing before mounting the rotor
- Check caliper clearance with the wheel off
- Look for rubbed spots on the backing plate after the first drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262259MG |
| UPC | 90127949153 |
| Sold as | Kit |
| Caliper | S4, four-piston, fixed |
| Caliper color | Monster Green |
| Rotor outside diameter | 12.0 inch |
| Rotor type | 1-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor thickness | 1.02 |
| Axle | Rear, Ford 9 Inch Early Big Bearing |
| Lug count | 5 lug |
| Bolt pattern | 5×4.50/5×4.75 |
| Minimum wheel diameter | 16.0 inch |
| Pad FMSI number | DR1-C |
| Park brake | Included; park brake cables not included |
| Hose material | Steel braided, DOT approved |
| Template | S113E |
| Emission code | 6 |
| Grade type | Performance |
| Country of origin | USA |
Vehicle fitment
It is designed around Ford 9 inch early big bearing rear axle flanges. Check the axle flange and the S113E template against your rear axle and wheel before buying.
Because no vehicle is named, do not assume a fit from the axle name alone. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Check the S113E template against the wheel you plan to run, since the 16.0-inch minimum diameter applies. The park brake cables are not part of the kit, so budget for them separately if you want a cabled parking brake.
What’s included
Caliper, one-piece 12-inch rotor, backing plate with park brake shoe assembly, and braided hoses.
Not included: Park brake cables.
