Overview
The Baer Brakes 6910091 is a left-side, 1-piece replacement brake rotor with a plain finish, built for select Baer Brake systems. It has a short hat, 12 in outside diameter and 0.81 in nominal thickness, and mounts on a five-stud pattern with a 4.50 in bolt circle.
A plain finish means the braking face has no slots or drilled holes. Apart from the surface, the listed construction, cooling vane design and dynamic balancing match the slotted versions, so the surface is the main choice to make. The overall height listed is 1.988 in, and the rotor is directional for the left side only.
Key features
- Full cast 1-piece cast iron rotor
- Curved vane design for cooling
- Dynamic balanced for vibration-free performance
- Designed for stability and resistance to distortion
- Plain braking surface with no slots or drilled holes
- Directional, made for the left side only
Plain versus slotted surfaces
A plain braking surface is the simplest face a rotor can have. Without slots or drilled holes, there are no edges to collect debris or gas, so the pad contact area stays continuous. That makes the choice mostly about how the vehicle is used. Drivers who mainly commute and tow lightly often run plain rotors, while those who see wet, muddy or dusty conditions may weigh the surface features more carefully before deciding.
Whatever surface you pick, bed the new pads to the rotor as the pad maker directs, and check for pulsation or noise after the first stops. Rotor thickness is the main wear measure, so check it at each pad change. Replace rotors that show deep scoring, heat spots or thickness below the minimum on the hat.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 6910091 |
| UPC | 844165034537 |
| Axle side | Left |
| Construction | Full cast, 1-piece |
| Material | Cast iron |
| Rotor type | Vented |
| Brake surface | Directional |
| Surface type | Plain |
| Hat style | Short hat |
| Drum in hat | No |
| Outside diameter | 12 in |
| Nominal thickness | 0.81 in |
| Overall height | 1.988 in |
| Stud/lug hole quantity | 5 |
| Stud/lug hole circle diameter | 4.5 in |
| Center hole diameter | 2.783 in |
| ABS tone ring included | No |
| Grade type | Performance |
| Emission code | 6 |
| Sold as | Each |
| Country of origin | USA |
Vehicle fitment
It is a replacement for select Baer Brake systems, with no makes, models or years named. Verify your vehicle’s year, model and trim before ordering.
A matching bolt pattern does not confirm fit on its own, because hat height, thickness and center bore also need to suit your hub. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
This left-side rotor is directional, so only the left hub should receive it. Measure the hat height and center bore against the existing rotor, since the 2.783 in register must match the hub. Brake work changes how the vehicle stops, so have it checked before driving on public roads.
What’s included
One left-side replacement rotor sold as each.
Not included: pads, calipers, hardware and the right-side rotor.
