Overview
The Big Claw HD front disc brake rotor kit, part number 2301072-2, is an oversized front rotor set for GM heavy-duty pickups with a single rear wheel. It covers the Chevrolet Silverado 2500 HD and 3500 HD and GMC Sierra 2500 HD and 3500 HD from 2020 to 2025.
Each rotor is a one-piece, full-cast design with curved vanes and a slotted surface. Caliper repositioning brackets allow the larger diameter rotor to clear while OE pads and hardware still work. In extreme conditions, rotor temperatures can run as much as 200 degrees lower than OE, and braking effectiveness gains reach as much as 49 percent.
Key features
- Oversized front rotors, up to 2 inches larger than stock on some applications
- Conventional rotor type with a directional brake surface
- Slotted friction surface for a consistent pedal feel.
- Zinc-plated finish with rust-resistant coating
- Curved vent design for improved airflow
- Floating rotor design with an 8-bolt pattern
Wheel clearance and rotor choice
Front brakes on a heavy-duty pickup handle a large share of stopping force, so the rotor, pad and caliper need to work as one system. A larger diameter rotor moves the contact point outward and changes the leverage, which is why the caliper brackets matter. Wheel offset and spacer use also affect clearance, so the rotor should be checked against the wheel before the caliper is bolted down.
Front hubs and wheel bearings should be inspected at the same time. Check for play, grease leakage and worn studs. Clean the hub face and make sure the rotor sits flat before the wheels go back on, because a small mounting error can cause pulsation that feels like a rotor problem.
- Confirm the rotor clears the wheel with the spare fitted
- Inspect the front wheel bearings for play
- Clean the hub face and lug studs
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 2301072-2 |
| UPC | 90127969984 |
| Axle | Front |
| Drive | 2WD, 4WD |
| Rotor construction | One piece, full cast |
| Rotor type | Vented, conventional, floating |
| Brake surface | Directional |
| Vent design | Curved |
| Surface type | Slotted |
| Finish | Zinc plated, rust-resistant coating |
| Material | Cast iron |
| Grade type | Performance |
| Template | Z206U |
| Center hole diameter (in) | 5.006 |
| Mounting bolt hole circle diameter (in) | 7.086 |
| Mounting bolt hole diameter (in) | 0.641 |
| Mounting bolt holes | 8 |
| Outside diameter (in) | 15 |
| Overall height (in) | 4.03 |
| Nominal thickness (in) | 1.575 |
| Discard thickness (in) | 1.496 |
| ABS tone ring included | No |
| Emission code | 6 |
| Country of origin | USA |
| Sold as | Set |
| Warranty | Limited 1 Year |
Vehicle fitment
The kit is for the 2020–2025 Chevrolet Silverado 2500 HD and 3500 HD and GMC Sierra 2500 HD and 3500 HD. Wheel fit varies by wheel company and style.
Models and years outside this list, including Silverado and Sierra 1500 trucks and Ford Super Duty trucks, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The swap is a direct bolt-on, and Baer says no brake bleeding is required. Compare the Z206U template against your wheel, including the spare, to confirm the rotor clears before the front brakes are reassembled.
What’s included
The kit includes a pair of front Big Claw HD rotors and a pair of new caliper relocation brackets.
