Overview
The Baer Brakes 55072-020 is a set of front Claw performance rotors for a wide range of Chevrolet and GMC 2500, 3500 and 4500 trucks, vans and SUVs. The manufacturer fitment list covers model years from 1999 through 2017, with qualifiers for rear wheel setup and drive on several entries.
Each rotor is a one-piece, full cast cast iron vented design with an outside diameter of 325, a 165 bolt hole circle diameter and eight studs. The slotted and drilled surface and zinc-plated finish are intended to show behind open center wheels.
Key features
- Slotted and drilled friction surface vents gas and dust from the pad interface
- Vented rotor with a directional brake surface
- Chamfered cross drilled holes to help reduce stress cracking
- Premium, mill balanced direct replacement design
- Zinc-plated finish for open center wheels
Inspecting and replacing rotors
Front rotors take the heaviest share of braking on most trucks, so wear shows up first here. Common signs include a pulsing pedal, vibration through the steering wheel, scoring on the friction surface, and a raised lip at the outer edge. Measure rotor thickness with a micrometer at several points around the braking track and compare the reading with the discard thickness for the part. A rotor that measures at or below that limit should be replaced, even if it looks smooth.
When replacing rotors on a heavy-duty truck, pads are usually changed at the same time so the new rotor is not mated with a worn friction surface. Bed in the new pads and rotors with a series of moderate stops to transfer an even layer of friction material. Keep the hub face and mounting surface clean and free of rust before installing, since a dirty hub is a common cause of runout. Tighten lug nuts in a star pattern and re-check torque after the first few drives.
- Replace pads and rotors together
- Clean the hub face before mounting
- Check runout with a dial indicator
- Inspect brake lines and calipers at the same time
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 55072-020 |
| UPC | 844165031338 |
| Axle | Front |
| Rotor construction | One-piece, full cast |
| Material | Cast iron |
| Surface type | Slotted and drilled |
| Rotor type | Vented |
| Brake surface | Directional |
| Disc finish | Zinc plated |
| Outside diameter | 325 |
| Overall height | 89.3 |
| Discard thickness | 36.5 |
| Mounting bolt hole circle diameter | 165 |
| Stud/lug hole quantity | 8 |
| Grade type | Premium |
| ABS tone ring included | No |
| Emission code | 6 |
| Sold as | Set |
| Country of origin | CN |
Vehicle fitment
The manufacturer fitment list covers these front applications: 1999–2004 and 2001–2010 Silverado and Sierra 2500 and 2500 HD; 2007 Silverado and Sierra 2500 HD Classic and 3500 Classic; 2004–2006 and 2007–2010 Silverado and Sierra 3500 variants; 2000–2013 Suburban and Yukon XL 2500; 2003–2017 Express and Savana 2500 and 3500; 2010–2011 Express and Savana 4500; and 2002–2006 Avalanche 2500.
Chevrolet and GMC 1500 models, the Tahoe, and Yukon models other than the Yukon XL 2500 are outside its fitment range. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Read the qualifiers before fitting. The Avalanche 2500 entry is listed with a 2 inch body lift, and the 3500 entries are split by dual rear wheels or single rear wheels, with the 2004–2006 entries also limited to 4WD or RWD.
What’s included
A set of front rotors.
Not included: brake pads and calipers are not part of this kit.
