Overview
Part 6919090 is a slotted left-side rotor for select Baer Brake systems. It is a one-piece, full cast vented design measuring 12.000 inch across and 1.020 inch thick, without drilled holes or zinc plating.
Cast iron construction, a curved vane design for cooling, and dynamic balancing for vibration-free performance make up the main features Baer cites. The stud/lug circles are 4.50 and 4.75 inch, five holes each, with a 2.780 inch center register. Being directional, it belongs on the left side only.
Key features
- Slotted friction face, with no drilling or zinc plating in the specification
- Two stud/lug circles, 4.50 and 4.75 inch, each with five holes
- Curved vane design for cooling
- Dynamically balanced for vibration-free performance.
- Cast iron, full cast and one piece
- Directional design made for the left side
Things to check
Slotted rotors help clear pad debris from the friction surface, but the slots can also show uneven wear as they age. Look across the face for cracks that begin at slot edges, and measure the rotor thickness in several places before reinstalling it. Thickness that changes from one spot to another can cause pulsation under light braking.
Because this rotor is directional and left-side only, double-check the side before mounting it. Clean the hub face, then seat the rotor fully before attaching the wheel. Run the rotor out with a dial indicator if one is available, and bed in new pads gradually after installation to reduce vibration.
- Replace the rotor if the slots have cracked at the edges.
- Check the wheel bearing for play during inspection.
- Tighten wheel fasteners in a crisscross pattern.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 6919090 |
| UPC | 90127961377 |
| Side | Left |
| Construction | Full cast, one piece |
| Rotor type | Vented |
| Brake surface | Directional |
| Surface type | Slotted |
| Material | Cast iron |
| Outside diameter | 12.000 inch |
| Nominal thickness | 1.020 inch |
| Overall height | 2.406 inch |
| Stud/lug hole circle diameter | 4.50 inch and 4.75 inch |
| Stud/lug hole quantity | 5 |
| Center hole diameter | 2.780 inch |
| Drum in hat | Yes |
| ABS tone ring included | No |
| Grade type | Performance |
| Emission code | 6 |
| Sold as | Each |
| Country of origin | USA |
Vehicle fitment
Part number 6919090 has no fitment stated, and it carries no year, make, model or chassis code. Baer’s description covers select systems only, so check the 5 x 4.50 inch or 5 x 4.75 inch bolt pattern and the 2.780 inch center register against your hub.
Confirm your vehicle’s year, model and trim before ordering. Do not assume a match from the slotted finish alone.
Installation notes
Mount the left-side rotor on the left hub only, since the directional design is made for one side. Measure your hub’s bolt circle, because two patterns are offered and a mismatch will stop the rotor from seating. No ABS tone ring comes with it, so source one separately if needed. A poorly seated rotor affects braking, so have the fit checked before driving the vehicle.
What’s included
The unit is one left-side rotor, sold as each.
Not included: ABS tone ring.
