Overview
The Baer Brakes 4262255FR, a Fire Red SS4 Plus, is a 13 inch rear brake system built for Ford axles with an 8 inch or 9 inch small bearing axle flange. The fixed S4 four-piston caliper in Fire Red works with a two-piece slotted, drilled and zinc plated rotor that suits five-lug wheels on a 5×4.50/5×4.75 bolt pattern.
Baer uses one backing plate for both the caliper mount and the park brake, which includes a one-piece park brake shoe assembly. Rotors are pre-assembled with stainless NAS hardware, and the hat is billet aluminum. Verify the axle flange and wheel details before ordering.
Key features
- Powder coated Fire Red finish on the S4 caliper
- Four pistons in a fixed caliper design
- Hard anodized aluminum pistons with stainless steel abutments
- Two-piece zinc plated rotor with slotted and drilled face
- Billet aluminum rotor hat included in the two-piece design
- Stainless braided, DOT approved hoses
- Forged or billet US aluminum body, cut on CNC equipment in Phoenix, Arizona
Brake lines and hose care
Braided stainless hoses give a firmer pedal feel than rubber lines because they expand less under pressure. They still need inspection, since the outer sheath can chafe against suspension parts and the fittings can seep if they are overtightened or cross-threaded. Routing the hose with clearance from the tire, spring and axle housing keeps the line away from heat and debris.
Brake fluid should be replaced on a regular schedule, and the hose installation is a good time to do it. Bleed the system in the correct order after any line is opened, and check the park brake cable routing once the rear assembly is finished. Keep a record of when fluid was last changed so the next service is easy to plan.
- Check hose fittings for seepage
- Look for bulges or chafing on the sheath
- Route lines clear of springs and tire contact
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262255FR |
| UPC | 90127947524 |
| Sold as | Kit |
| Caliper | S4, fixed, four pistons |
| Caliper color | Fire Red |
| Rotor | 13.0 inch outside diameter, vented, two-piece, slotted, drilled, zinc plated |
| Rotor thickness | 0.81 |
| Axle | Rear, Ford 8 inch/9 inch small bearing flange |
| Brake hose | Steel braided, DOT approved |
| Park brake | Included; park brake cables not included |
| Pad FMSI number | DR1-C |
| Template | S135H |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.50/5×4.75 |
| Minimum wheel diameter | 17.0 inch |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
The kit is designed for Ford rear axles using the 8 inch or 9 inch small bearing flange, on five-lug wheels with a 5×4.50/5×4.75 bolt circle.
Wheel design affects clearance, so test template S135H against the wheel you plan to use. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Because the park brake shoe assembly is part of the backing plate, it installs together with the caliper mount. Park brake cables do not come with the kit and will need to be obtained elsewhere. Measure your rims against the 17.0 inch minimum wheel diameter before fitting. Having a qualified technician fit the system is advisable given how critical brakes are.
What’s included
Supplied with the Fire Red system: S4 caliper, two-piece rotor with billet hat, backing plate and park brake shoes, and stainless hoses.
Not included: Park brake cables.
