Overview
Part 4262773B is the black finish of Baer’s SS4 11.0-inch rear brake system, a kit for rear axles with Ford 9 Inch Torino (late big) bearing housing ends. The S4TL four-piston caliper works with an 11-inch one-piece rotor that is slotted, drilled and zinc plated.
The backing plate carries a small, compact park brake assembly, and the caliper mount is built into the same plate. Baer lists 5 lugs on a 5×4.50/5×4.75 bolt pattern and a rotor that is vented, so note these figures when measuring your hub.
Key features
- Black-finished S4TL top-loaded four-piston caliper
- Machined on CNC equipment from forged or billet aluminum of US origin
- Powder-coated caliper surface
- Pistons of hard-anodized aluminum that seat against stainless steel abutments
- Dual dust, weather and pressure seals
- Banjo inlet with no pipe threads
- One-piece slotted, drilled, zinc-plated rear rotor
- Park brake assembly within the backing plate
- Stainless braided hoses and hardware in the kit
Rotor and pad wear
A slotted, drilled rotor sheds water and gas faster than a plain one, which helps pad bite in wet conditions. Slots and holes also collect dust, and pads wear differently against a drilled surface. Check the rotor face for cracks radiating from the drilled holes, and measure thickness against the minimum stamped on the rotor hat if it has one.
Pads should be replaced before the friction material reaches the backing plate. Squealing, grinding or a pulsing pedal are common signs. Rotor replacement often goes with pad replacement, since a worn rotor can glaze new pads quickly. Bed in new pads with a few moderate stops before loading the brakes hard.
On a trail rig, mud packed between the pads and rotor can cause noise, so clean the area after wet runs.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262773B |
| UPC | 90127974902 |
| Caliper | S4TL, four-piston, fixed (rear) |
| Caliper color | Black |
| Rotor diameter (rear) | 11.0 inch |
| Rotor type | One-piece, slotted, drilled, vented, zinc-plated |
| Rotor thickness | 1.02 |
| Brake pad FMSI number | 6070013 |
| Axle | Rear |
| Axle flange | Ford 9 Inch Torino/Late Big Bearing |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.50/5×4.75 |
| Minimum wheel diameter | 15.0 inch |
| Brake hose | Steel braided, DOT approved |
| Park brake | Included (cables not included) |
| Emission code | 6 |
| Grade type | Performance |
| Template | ST217A |
| Sold as | Kit |
| Country of origin | USA |
Vehicle fitment
Rear axles with Ford 9 Inch Torino (late big) bearing housing ends are the intended match, so measure your housing ends before buying. Confirm fit for your vehicle’s year, model and trim before ordering.
Baer does not guarantee fit to specific wheel styles. Lay the ST217A template against your wheel first.
Installation notes
Park brake cables are not included, so plan on sourcing a cable set for the park brake. Stainless braided hoses and hardware are supplied. Verify wheel clearance with the template before installation, and have the rear disc conversion done by a shop that has worked on rear brake systems.
What’s included
The kit includes the black S4TL caliper, the 11-inch rotor, the backing plate with park brake assembly, and braided stainless hoses with hardware.
Not included: park brake cables.
