Overview
The Baer Brakes 6910312 is a 15-inch, 2-piece left rotor ring with a slotted, drilled and zinc-plated finish, made for select Baer Brake systems. It is a replacement part sold as each.
A two-piece rotor separates the friction ring from the mounting hat, so the ring bolts to the hat instead of casting as one piece. This ring is 1.25 inch thick, vented and made of cast iron, with 12 mounting bolt holes on a 9.45 inch circle. Those dimensions are the ones to match against the hub before choosing this part.
Key features
- Slotted, drilled and zinc-plated friction face
- Two-piece construction with a 15-inch ring
- Curved vane design intended for cooling
- Dynamically balanced for vibration-free running
- Directional design for the left side
- 12 mounting bolt holes on a 9.45 inch circle
Two-piece rotor basics
A two-piece rotor separates the friction ring from the hat, which lets the ring be replaced without replacing the whole hub assembly. The hat carries the bearing and wheel studs, so its condition matters as much as the ring. Check the hat for cracks around the bolt holes and for corrosion where the ring seats before reusing it.
Fasteners on a two-piece ring should be checked for proper seating and tightness after the first few drives and periodically afterward. Use new fasteners when the original ones show stretching or corrosion. Larger rings are often paired with bigger calipers and pads, so confirm caliper and pad fit before the job begins.
- Inspect the hat for cracks near bolt holes
- Replace worn or corroded fasteners
- Check caliper clearance with the ring fitted
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 6910312 |
| UPC | 844165012092 |
| Axle side | Left |
| Outside diameter | 15 in |
| Nominal thickness | 1.25 in |
| Mounting bolt hole circle diameter | 9.45 in |
| Mounting bolt hole quantity | 12 |
| Construction | Two piece |
| Rotor type | Vented |
| Surface type | Slotted, drilled and zinc plated |
| Material | Cast iron |
| Grade type | Performance |
| Brake surface | Directional |
| ABS tone ring included | No |
| Sold as | Each |
| Country of origin | USA |
Vehicle fitment
It is made for select Baer Brake systems. Verify the 15-inch diameter, 1.25 inch thickness and 12 x 9.45 inch bolt pattern against the existing hardware before choosing this part. Confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Two-piece rings fasten to a separate hat, so check the 12-hole pattern on a 9.45 inch circle against the hat before assembly. Install the left ring only, since the directional design is side-specific. Tighten the fasteners to the torque value given for your hat, and have a qualified technician check runout and balance after fitting.
What’s included
One left-side two-piece rotor ring, sold individually.
Not included: the right-side ring, brake pads and hub hardware. Check the hat and mounting hardware against your assembly before ordering.
