Overview
The Baer Brakes 55056-020 is a set of two front Claw performance rotors for Chevrolet and GMC heavy-duty trucks and SUVs, plus the 2003-2009 Hummer H2. The rotors are direct replacement parts that take the place of the factory front rotors on the applications covered here. The 8-lug, 165 bolt circle pattern makes checking the hub a key step before installation.
The slotted and cross-drilled friction surface carries gases and dust away from the pad face. The vane structure is enhanced for cooling. The rotors are cast iron with a zinc-plated finish. The overall height is 89.3 and the discard thickness is 36.6.
Key features
- Slot and drill pattern that helps gases and dust clear the pad interface
- Enhanced vane design that Baer says supports cooling
- Premium, mill-balanced direct replacement rotor
- Chamfered cross-drilled holes to limit stress cracking
- Zinc-plated finish for open center wheels
- One-piece full cast vented construction with 8 lug holes
Hub and steering checks
Front rotors on heavy-duty trucks and SUVs carry more load than light-duty parts, and the hub is where most fit problems show up. Clean the hub face and wheel mounting surface, then check that the rotor sits flat before the wheel is installed. A rotor that sits off-center will pulse under braking and wear pads unevenly.
Steering setup matters for these applications because front axle geometry changes with the steering system. Keep vehicle options such as four-wheel steering in mind when comparing a part to your truck. Replace pads and rotors as a pair on each axle, and bed them in before heavy towing.
- Clean the hub face and remove any rust before mounting
- Torque lug nuts in a star pattern and re-check after the first drive
- Inspect brake hoses and ABS sensor wiring while the wheels are off
- Replace front pads with the rotors so wear stays even
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 55056-020 |
| UPC | 844165002208 |
| Axle | Front |
| Sold as | Set |
| Construction | One piece, full cast |
| Material | Cast iron |
| Rotor type | Vented |
| Surface type | Slotted x drilled |
| Brake surface | Directional |
| Disc finish | Zinc plated |
| Grade type | Premium |
| Stud/lug hole quantity | 8 |
| Mounting bolt hole circle diameter | 165 |
| Outside diameter | 325 |
| Overall height | 89.3 |
| Discard thickness | 36.6 |
| Emission code | 6 |
| ABS tone ring included | No |
| Country of origin | CN |
Vehicle fitment
The manufacturer fitment list includes six front entries: 2002-2006 Chevrolet Avalanche 2500, 1999-2004 Chevrolet Silverado 2500, 2000-2013 Chevrolet Suburban 2500, 1999-2004 GMC Sierra 2500, 2000-2013 GMC Yukon XL 2500, and 2003-2009 Hummer H2.
Models and years outside these six entries are not covered by this list. Confirm your vehicle’s year, model and trim before ordering, including its steering setup.
Installation notes
The ABS tone ring is not included, so the existing tone ring must be carried over. Four-wheel steering setups are a fit consideration for this rotor, so confirm the steering setup matches before installation. A qualified technician should inspect the front brakes after installation.
What’s included
A pair of front rotors, sold as a set.
Not included: ABS tone ring.
