Overview
The Baer Brakes 54100-020 is a rear Claw performance brake rotor for the 2002–2006 Ford Expedition and the 2003–2006 Lincoln Navigator. It is a direct replacement for the factory rear disc, with a cross-drilled and slotted friction face that helps gas and dust leave the space between the pad and rotor.
The rotor supports a more consistent pedal feel and reduced brake fade under repeated braking. It is one-piece, full-cast, vented iron with a directional friction surface and a zinc-plated finish that shows through open-center wheels. Expedition coverage starts with vehicles built on 03/18/02, so build date matters when choosing this rear rotor.
Key features
- Slots and cross-drilled holes that let gas and dust escape from the pad face
- Enhanced vane structure made from premium materials for cooling and durability
- Premium, mill balanced direct replacement rotor design
- Chamfered cross-drilled holes intended to minimize stress cracking
- Zinc-plated finish for a bright look behind open-center wheels
- Directional friction surface on a vented, one-piece full-cast rotor
Rear brake wear signs
Rear rotors wear more slowly than fronts on most trucks and SUVs, but they still need periodic inspection. Look for a lip at the outer edge, uneven thickness that causes a pulsing pedal under light braking, or a parking brake that no longer holds. Rear pads on a rotor that has worn below its discard thickness can also cause grinding and rapid heat damage.
Rear brake systems respond differently to wear. On a disc setup, the rotor and caliper work together, so a sticking caliper slide can wear one pad faster than the other. Replacing the rotor is a good time to inspect the caliper bracket, the hardware clips and the parking brake cable for corrosion or binding.
- Inspect the rear rotor face at each pad change
- Replace the hardware clips with the pads
- Check parking brake adjustment after a rear rotor swap
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 54100-020 |
| UPC | 844165003021 |
| Axle | Rear |
| Drive | 2WD, 4WD |
| Construction | One piece, full cast |
| Material | Cast iron |
| Rotor type | Vented |
| Friction surface | Slotted and cross-drilled, directional |
| Disc finish | Zinc plated |
| Grade type | Premium |
| Outside diameter | 342.01 |
| Overall height | 51.56 |
| Discard thickness | 19.1 |
| Mounting bolt hole circle diameter | 135 |
| Stud/lug hole quantity | 6 |
| ABS tone ring included | No |
| Emission code | 6 |
| Country of origin | CN |
Vehicle fitment
Covers the 2002–2006 Ford Expedition (rear, built from 03/18/02, 2WD and 4WD) and the 2003–2006 Lincoln Navigator (rear).
Expedition models built before 03/18/02 and later Expedition generations, including 2007 and newer, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Check the 135 mounting bolt hole circle and the 6 stud holes against your rear hub before fitting, since the rotor must line up with the existing pattern. The friction surface is directional, so confirm orientation before the rotor goes on. Bed in new pads as the pad maker directs before relying on hard stops.
What’s included
Two direct replacement rotors are in the package.
Not included: the ABS tone ring, which this kit does not supply.
