Overview
The Baer Brakes 4262109 is an Ironsport rear disc brake kit for Ford 8.8 Inch C-Clip rear ends with a 2.5 Inch axle standoff and a 4-lug wheel pattern of 4×4.25. Baer designed it as a drum to disc conversion, so it replaces a rear drum setup with a vented rotor and single-piston caliper for owners who run smaller-diameter wheels and want a modern rear brake package.
The IronSport is a full-featured drum to disc conversion. It fits some 15 inch wheels and most 16 inch or larger wheels. The park brake is built into the caliper, so one unit handles service braking and parking.
Key features
- Single-piston floating caliper in a silver zinc-plated finish
- Integral park brake built into the caliper
- One-piece vented rotor, slotted, drilled and zinc plated, with an 11.65 Inch outside diameter
- Steel braided brake hoses, DOT approved
- Brackets, hardware and fittings supplied with the calipers and rotors
- Designed for wheels with a minimum diameter of 15.0 Inch
Drum to disc conversion basics
Converting a rear drum setup to disc brakes moves the braking surface to a rotor that is easier to inspect and cool. The rotor and caliper take over the work the drum used to do, so the old drum components, shoes and hardware are usually removed as part of the job. Expect the pedal feel to change slightly while new pads bed in.
A smaller rotor and single-piston caliper suit lighter loads and smaller wheels, while larger tires or heavier use may call for a different package. Parking performance depends on the cable and park mechanism, so plan that setup at the same time as the caliper install. Replacing the hoses during the same job keeps the system consistent.
- Remove and inspect old drum hardware before mounting
- Confirm cable routing for the integral park brake
- Replace pads together on each side
- Recheck fluid level after the first few stops
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4262109 |
| UPC | 844165034193 |
| Sold as | Kit |
| Axle flange | Ford 8.8 Inch |
| Lug count | 4 Lug |
| Wheel bolt pattern | 4×4.25 |
| Rotor outside diameter | 11.65 Inch |
| Rotor thickness | 0.705 |
| Rotor construction | Vented |
| Surface finish | Slotted, drilled and zinc plated |
| Caliper | 1 iron, single piston, floating |
| Caliper color | Silver |
| Pad FMSI number | D0627 |
| Hose material | Steel braided |
| Hose DOT approved | Yes |
| Includes park brake | Yes |
| Includes park brake cables | No |
| Minimum wheel diameter | 15.0 Inch |
| Template | V107I |
| Country of origin | USA |
Vehicle fitment
Its fit is defined by the Ford 8.8 Inch axle flange, the 4 on 4.25 bolt circle and the 2.5 Inch axle standoff, so those specifications are the basis for checking fit.
Its fit is set by the Ford 8.8 Inch flange. Compare template V107I with your intended wheel first, and confirm your vehicle’s year, model and trim before ordering.
Installation notes
Park brake cables are not included, so plan the parking brake cable setup before mounting the caliper. Rear brake work involves hydraulic lines and should be done by a qualified installer, who should bleed the brake lines once the hoses are connected.
What’s included
The IronSport system includes calipers, rotors, brackets, hardware, braided steel brake hoses and fittings for the rear axle.
Not included: Park brake cables.
