Overview
The Baer Brakes 6910321 is a 12-inch, 1-piece left replacement brake rotor with a slotted face and a short hat. It is made for select Baer Brake systems and sold as a single left-side rotor, not as a pair.
Brake rotors are the metal discs the caliper pads squeeze, so outside diameter, thickness, center bore and bolt pattern all have to match the hub. This rotor is vented cast iron with a 1.1 inch nominal thickness, a 5 x 4.50 inch bolt pattern and a 2.799 inch center bore. Its surface is slotted only, with no drilled holes or zinc plating.
Key features
- Slotted friction face
- Curved vane design aimed at cooling
- Full cast, one-piece construction
- Dynamically balanced to reduce vibration
- Directional design for the left side
Choosing a left rotor
A left rotor is one half of a pair, and the two sides are not interchangeable when a rotor is directional. Before ordering, confirm which wheel the old rotor came from and whether the replacement is set up for that side. Replacing only one rotor is common, but the new part should be checked against the rotor on the opposite wheel for thickness and wear so braking stays even.
Slotted faces help shed pad dust and water, which many drivers value for off-road and wet use, but they can wear pads faster on some setups. Pad choice matters as much as rotor choice, so select a compound that suits the rotor material and your typical driving. Bed in new pads with a series of moderate stops before heavy use.
- Confirm the wheel side before opening the box
- Compare hat diameter and bolt pattern with the old rotor
- Replace pads when rotors are resurfaced or replaced
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 6910321 |
| UPC | 90127961087 |
| Axle side | Left |
| Outside diameter | 12 in |
| Nominal thickness | 1.1 in |
| Overall height | 1.717 in |
| Stud/lug hole quantity | 5 |
| Stud/lug hole circle diameter | 4.50 in |
| Center hole diameter | 2.799 in |
| Construction | Full cast, one piece |
| Rotor type | Vented |
| Hat style | Short hat |
| Surface type | Slotted |
| Material | Cast iron |
| Grade type | Performance |
| Brake surface | Directional |
| Drum in hat | No |
| ABS tone ring included | No |
| Sold as | Each |
| Country of origin | USA |
Vehicle fitment
It is made for select Baer Brake systems. Match the 12-inch diameter, 5 x 4.50 inch bolt pattern and 2.799 inch center bore against 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
Mount this rotor on the left hub only. Its directional vanes are meant to run in one orientation, so do not flip it onto the right side. Clean the hub face before fitting, and have a qualified technician check runout and brake function after installation.
What’s included
One left-side replacement rotor, sold individually.
Not included: the right-side rotor, an ABS tone ring, brake pads and hub hardware.
