Overview
Part number 05704-020 is a pair of solid, cross-drilled and slotted replacement rotors from Baer Brakes, sized for the rear axle of the 2006–2010 Hummer H3 and 2009–2010 Hummer H3T. Baer lists them as direct replacement rotors for those vehicles.
The slotted and drilled face gives gas and dust a way out from between the pad and rotor, which supports more consistent pedal feel and less brake fade. Each rotor is zinc plated for a bright look behind open-center wheels. The outside diameter is 312, the overall height is 68 and the discard thickness is 10.5.
Key features
- Solid rotor design, one-piece full cast iron.
- Cross-drilled holes with chamfered edges to reduce stress cracking.
- Slotted and drilled friction surface for gas and dust escape.
- Zinc-plated disc finish for open-center wheels.
- Directional brake surface and a premium grade type.
Solid rotors and heat
Solid rotors have no internal vanes, so they rely on mass and surface area rather than airflow through the disc to shed heat. Repeated hard stops on a heavy vehicle can warm them quickly, so good pad selection and a short rest between hard stops help keep temperatures under control.
Heavier vehicles load the brakes more than lighter trucks, so keep the pads, caliper slide pins and brake lines in good condition. Look for even pad wear, a glazed or grooved face and a pulsing pedal as signs the rotor needs replacing. Machining is only sensible if the rotor stays above its discard thickness.
- Check wheel torque after the first short drive
- Inspect brake hoses for cracks
- Bed in pads gradually before heavy use
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 05704-020 |
| UPC | 844165031680 |
| Sold as | Set |
| Axle | Rear |
| Drive | 4WD and AWD (H3); 4WD (H3T) |
| Rotor construction | One piece, full cast |
| Solid or vented | Solid |
| Brake surface | Directional |
| Surface type | Slotted and drilled |
| Material | Cast iron |
| Disc finish | Zinc plated |
| Grade type | Premium |
| Stud/lug hole quantity | 6 |
| Mounting bolt hole circle diameter | 140 |
| Outside diameter | 312 |
| Overall height | 68 |
| Discard thickness | 10.5 |
| ABS tone ring included | No |
| Emission code | 6 |
Vehicle fitment
The rear axle of the 2006-2010 Hummer H3 and 2009-2010 Hummer H3T is covered. The H3 is covered for 4WD and AWD drive, and the H3T for 4WD. Other model years and other Hummer models are not covered.
Other model years and other Hummer models are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Solid rotors have no internal vanes, so the hub and rotor mounting surfaces must be clean and flat before the new rotor goes on. Bed in new pads with several moderate stops, then avoid heavy braking until the pads are seated. Measure any used rotor against the 10.5 discard thickness before reinstalling it.
What’s included
The set contains two rear rotors, sold as a pair.
Not included: Pads and caliper hardware are not supplied with this pair.
