Overview
The Baer Brakes 72888-020 is a vented rear brake rotor set, sold as a pair, with a cross-drilled and slotted friction surface and zinc-plated finish. The manufacturer list runs to the 2018–2025 Jeep Wrangler JL and the 2018 Jeep Wrangler JK, paired with a 350 mm rear rotor and the BR3 brake code.
Each rotor is a one-piece, full cast drum-in-hat unit with chamfered cross-drilled holes to minimize stress cracking. Slots and drilled holes both let gas and dust leave the pad face area during braking, which Baer ties to steadier pedal feel and reduced brake fade. The zinc-plated face suits open center wheels, and the mill balanced rotors are rated premium grade.
Key features
- Slot and drilled friction surface for gas and dust escape
- Chamfered cross-drilled holes to minimize stress cracking
- Vented design for a 350 mm rear rotor
- Zinc-plated finish in open center wheels
- Mill balanced, premium grade rotor
Before you buy
Rear rotors work with the pads, calipers and brake lines as one system, so replacing rotors often calls for fresh pads at the same time. Pads bedded to a new rotor surface tend to give more consistent pedal feel, and a worn pad can damage a new rotor quickly. When the rotor is changed, inspect the caliper slides and hardware for wear and make sure the caliper moves freely before reassembly.
Drilled and slotted rotors are chosen for the way they move gas and dust away from the pad face, but they can wear pads at a different rate than smooth rotors. Owners who drive off-road often pick a pad compound suited to the heat and wet conditions they expect. Open center wheels show more of the rotor finish, so keep the zinc-plated face clean and free of corrosion.
Look for signs that the old rotors need replacement: pulsation through the pedal, grooves or heat checks across the friction surface, a raised lip at the outer edge, or thickness near the discard limit. Measure with a micrometer and compare the reading against the minimum thickness for the rotor.
- Replace pads at the same time as the rotors
- Clean the hub face and remove rust before mounting
- Torque lug nuts to the specification for your vehicle
- Bed in new pads with a series of moderate stops
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 72888-020 |
| UPC | 90127971208 |
| Sold as | Set (pair) |
| Axle | Rear |
| Solid or vented | Vented |
| Rotor type | Drum-in-hat |
| Construction | One piece, full cast |
| Material | Cast iron |
| Surface type | Slotted x drilled |
| Disc finish | Zinc plated |
| Brake surface | Directional |
| Outside diameter | 13.78 in (350 mm) |
| Center hole diameter | 2.835 in (72 mm) |
| Nominal thickness | .866 in (22 mm) |
| Discard thickness | .787 in (20 mm) |
| Overall height | 3.008 in (76.4 mm) |
| Stud/lug hole circle diameter | 5 |
| Stud/lug hole quantity | 5 |
| Grade | Premium |
| Emission code | 6 |
| ABS tone ring included | No |
| Country of origin | USA |
Vehicle fitment
The manufacturer fitment list includes the 2018 Jeep Wrangler JK and 2018–2025 Jeep Wrangler JL. The part is sized for a 350 mm rear rotor and carries the BR3 brake code.
The title also refers to 2020–2025 Jeep Gladiator JT with BR3, a model not included in the manufacturer fitment list here. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Rotor orientation matters because the brake surface is directional. Fit each side as supplied, and note that the set does not include an ABS tone ring.
What’s included
A pair of rear rotors, sold as a set.
Not included: ABS tone ring.
