Overview
The Baer Brakes 4262238FR is an SS4 rear brake kit for Ford 8 inch and 9 inch small bearing axle flanges. It uses a fixed 4-piston S4 caliper finished in Fire Red on a 12 inch one-piece slotted, drilled, zinc-plated rotor, with a 5×4.50/5×4.75 bolt pattern.
The backing plate supports the caliper and houses a one-piece park brake shoe assembly, which keeps the parking brake in the same rear package. Hard anodized aluminum pistons and stainless steel abutments are used in the S4 caliper. The minimum wheel diameter is 16.0 inch, and the 12 inch SS4 is intended for most 16 inch or larger wheels. The S113E template helps confirm clearance. The parts are CNC machined from US-sourced forged or billet aluminum.
Key features
- Fixed four-piston S4 caliper with a powder-coated Fire Red finish.
- Hard anodized aluminum pistons for steady pad contact.
- Dual seals for dust, weather and pressure protection.
- One-piece slotted, drilled, zinc-plated rotor.
- Stainless steel abutments and noise suppression clips.
- Stainless braided hoses, DOT approved.
Braided hose inspection
Stainless braided hoses hold their shape under pressure better than rubber lines, but the braid can still chafe against brackets, suspension parts and tire edges. Inspect the hoses along their full length, not only at the ends, and look for kinks, bulges and seepage at the fittings. A hose that rubs through its outer braid can fail without warning.
When a hose is replaced, bleed the air from the caliper end of the line. Use fresh brake fluid of the type the vehicle calls for, and keep the reservoir covered during the work so moisture does not enter the system. Route the new hose so it clears moving parts and exhaust heat, and check it again after the first few drives.
- Check fittings for seepage after each service
- Keep hoses clear of exhaust heat sources
- Replace any hose with cracked or swollen covering
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262238FR |
| UPC | 90127947654 |
| Caliper | S4, 4-piston, fixed |
| Caliper color | Fire Red |
| Rotor outside diameter | 12.0 inch |
| Rotor type and construction | 1-piece, vented, slotted, drilled, zinc-plated |
| Rotor thickness | 1.02 |
| Minimum wheel diameter | 16.0 inch |
| Axle flange | Ford 8 inch/9 inch small bearing |
| Wheel bolt pattern | 5×4.50/5×4.75 (5 lug) |
| Pad FMSI number | DR1-C |
| Template | S113E |
| Park brake | Included (park brake shoe assembly); park brake cables not included |
| Brake hose | Steel braided, DOT approved |
| Piston material | Hard anodized aluminum |
| Sold as | Kit |
| Country of origin | USA |
Vehicle fitment
Your rear axle’s flange style and the 5×4.50/5×4.75 bolt pattern are the deciding factors, so measure or confirm them first. Confirm your vehicle’s year, model and trim before ordering.
Rear axles outside the listed Ford 8 inch and 9 inch small bearing flange style are not covered by this kit. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Park brake cables are not included, so a separate cable set is needed to operate the one-piece park brake shoe assembly. Confirm wheel clearance around the S4 caliper with the template, since the minimum wheel diameter is 16.0 inch. Brake work is safest left to a qualified installer.
What’s included
The 12 inch rotor, the Fire Red S4 caliper, the backing plate with one-piece park brake shoe assembly, and stainless braided hoses.
Not included: park brake cables.
