Overview
The Baer Brakes 6929185 is a 12-inch, right-side, one-piece brake rotor with a slotted friction face. It suits select Baer Brake systems and carries the modified drum lip made for early Big Bearing hubs, a detail that decides whether it is the right rotor for your hub.
This vented rotor is cast iron with a drum in the hat. The 1.02-inch nominal thickness and 2.78-inch center hole appear in the specifications table below, next to the five-stud pattern.
Key features
- Slotted friction face for the right side
- Modified drum lip machined for early Big Bearing systems
- Drum in hat design
- Full cast, one-piece construction
- Vented, directional brake surface
- Dynamically balanced for smooth running
Checking hub compatibility
The hub is the first thing to check on any rotor swap, because the center hole, stud count and bolt circle must all line up before the wheel can seat correctly. A rotor that clears the studs but sits off the hub face can cause vibration and uneven pad contact. Measuring the hub with a caliper and comparing it to the rotor before the old one comes off saves a second trip.
Drum-in-hat rotors also rely on the drum lip sitting cleanly against the bearing and seal area, so the lip design matters as much as the bolt pattern. Clean the hub face and remove any rust scale before fitting. Repack or inspect the wheel bearings if they were removed, and check for play once the rotor is in place.
- Measure the center hole and stud pattern before ordering
- Clean the hub face and remove rust scale
- Replace the ABS tone ring separately if the hub requires it
- Tighten lug nuts in a star pattern after fitting
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 6929185 |
| UPC | 90127962367 |
| Material | Cast iron |
| Construction | Full cast, one piece |
| Axle side | Right |
| Brake surface | Directional |
| Rotor type | Vented |
| Surface type | Slotted |
| Outside diameter | 12 in |
| Nominal thickness | 1.02 in |
| Overall height | 2.406 in |
| Center hole diameter | 2.78 in |
| Stud/lug hole quantity | 5 |
| Stud/lug hole circle diameter | 4.50 in and 4.75 in |
| Drum in hat | Yes |
| Notes | Machined for Big Bearing systems |
| ABS tone ring included | No |
| Grade type | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
Compare the 2.78-inch center hole and five-stud, 4.50/4.75-inch bolt circle with your hub. Confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Check that your hub is an early Big Bearing design, since the drum lip is machined for that application. The ABS tone ring is not included, so account for it when planning the change.
What’s included
Rotors are sold individually. This entry covers one right-side rotor with a slotted friction face.
Not included: an ABS tone ring, as the listed details specify ABS Tone Ring Included: No.
